Peter G. Passias, MD, FAAOS's portrait
Peter G. Passias, MD, FAAOS
Assistant Clinical Professor of Orthopaedic Surgery
New York University School of Medicine
New York, NY

About Peter G. Passias, MD, FAAOS

Dr. Peter Passias is a board-certified orthopaedic surgeon with advanced training in bone and neurological spinal disorders. He is Assistant Clinical Professor of Orthopaedic Surgery at New York University (NYU) School of Medicine/ NYU Langone Medical Center-Hospital for Joint Disease. Dr. Passias is in practice at the New York Spine Institute.

Dr. Passias’ areas of expertise include scoliosis and spinal deformities, spondylolisthesis, cervical disc herniation, spinal cord compression, spinal stenosis, minimally invasive spine surgery, disc replacement, and non-fusion technologies.

Dr. Passias completed an accelerated medical school program and Master’s in Mechanical Engineering at Sophie Davis School of Biomedical Education in New York graduating Summa Cum Laude and top of his class of over 250 medical students. He completed his internship at Tufts University Medical Center and residency at the Tuft’s Combined Program in Boston.

Thereafter, Dr. Passias completed a clinical fellowship in the surgical treatment of Spinal Tumors and Spinal Trauma at the Harvard Combined Spine Fellowship at Massachusetts General Hospital and Brigham and Women’s Hospital followed by a post-doctoral in biomechanical engineering research of spinal disorders at the Massachusetts Institute of Technology. He then completed a second clinical fellowship in Scoliosis and Degenerative Spinal Surgery at Cornell University New York Presbyterian Hospital and the Hospital for Special Surgery.

Dr. Passias dedicates a great amount of his time to clinical and basic science-related spinal research. He has published more than 175 original and review articles and made over 200 presentations at scientific conferences, and served as faculty on many spinal surgery courses worldwide. Furthermore, he is a key member serving on committees of many prestigious and leading spine societies, including the American Academy of Orthopaedic Surgeons (AAOS), Cervical Spine Research Society (CSRS), International Spine Study Group (ISSG), North American Spine Society (NASS), and Scoliosis Research Society (SRS).

Dr. Passias has edited several textbooks on spinal deformity and cervical spine surgery and serves as an editor or reviewer for medical journals, including Spine, The Journal of Bone and Joint Surgery, The Spine Journal, The Journal of Spinal Disorders & Techniques and Neurosurgery.

Publications

Peer-Reviewed Publications

  1. Wang S, Passias PG, Li G, Li G, Wood K: Measurement of vertebral kinematics using noninvasive image matching method-validation and application. Spine. 2008 15;33 (11): E355-61.
  2. Li G, Passias PG, Kozanek M, Shannon B, Li G, Villamil F, Bono CM, Harris M, Wood KB. Interobserver reliability and intraobserver reproducibility of powers ratio for assessment of atlanto-occipital junction: Comparison of plain radiography and computer tomography. Eur Spine J. 2009 18(4): 577-82.
  3. Wang S, Xia Q, Passias PG, Wood K, Li G. Measurement of geometric deformation of lumbar intervertebral discs under in-vivo weightbearing condition. J Biomech. 2009 42(6):705-11.
  4. Li G, Passias PG, Wang S, Xia Q, Li G, Wood K. Segmental In-vivo vertebral motion during functional human lumbar spine activities. Eur Spine J. 2009 18(7): 1013-21.
  5. Xia Q, Wang S, Passias PG, Kozanek M, Li G, Wood K. In vivo range-of-motion of the lumbar spinous processes. Eur Spine J. 2009. 18(9): 1355-62.
  6. Wang S, Wang C, Passias PG, Li G, Yan M, Zhou H. Interobserver and intraobserver reliablility of the cervicomedullary angle in a normal adult population. Eur Spine J. 2009 18(9):1349-54.
  7. Li G, Passias PG, Kozanek M, Fu E, Wang S, Xia Q, Li G, Rand FE, Wood KB. Adult scoliosis in patients over 65 years of age: Outcomes of operative vs. non-operative treatment at a minimum two-year follow-up. Spine. 2009 34(20): 2165-70.
  8. Kozanek M, Wang S, Passias PG, Xia Q, Li G, Bono C, Wood K, Li G. Range of motion and orientation of the lumbar facet joints in vivo. Spine. 2009 34(19): E689-96.
  9. Lu G, Passias PG,  Kozanek M, Wang S,  Li G, Li G, Wood K: Endoscopically Assisted Anterior Release and Reduction through an Anterolateral Retropharyngeal Approach for Irreducible Atlantoaxial Dislocation Spine. 2010 35(5):544-51.
  10. Li G, Passias PG, Kozanek M, Metkar US, Liu Z, Wood K, Rehak L, Deng Y. Complications associated with thoracic pedicle screws in spinal deformity. Eur Spine J. 2010 19(9):1576-84.
  11. Xia Q, Wang S, Kozanek M, Passias PG, Wood K, Li G. In-vivo motion characteristics of lumbar vertebrae in sagittal and transverse planes. J Biomech. 2010 43(10):1905-9.
  12. Wang S, Wang C, Passias PG, Yan M, Zhou H. Pedicle versus laminar screws: what provides more suitable C2 fixation in congenital C2-3 fusion patients? Eur Spine J. 2010 1306-11.
  13. Ma Y, Passias PG, Gaber-Baylis L, Girardi F, Memtsoudis S. Comparative in-hospital morbidity and mortality after revision versus primary thoracic and lumbar fusion. The Spine Journal. 2010 10(3) 881-889.
  14. Passias PG, Wang S, Kozanek M, Xia Q, Li W, Grottkau B, Wood KB, Li G. Segmental lumbar rotation in patients with discogenic low back pain during functional weight-bearing activities. J Bone Joint Surg Am. 2011 93:29-37.
  15. Wang S, Xia Q, Passias PG, Li W, Wood K, Li G. How Does Degenerated Lumbar Disc Disease Affect the Disc Deformation at the Cephalic Levels In Vivo? Spine. 2011. 36(9):E574-81.
  16. Li W, Wang S, Xia Q, Passias PG, Kozanek M, Wood K, Li G. Lumbar facet joint motion in patients with degenerative disc disease at affected and adjacent levels: an in vivo biomechanical study. Spine. 2011 36(10):E629-37.
  17. Passias PG, Ma Y, Chiu YL, Mazumdar M, Girardi FP, Memtsoudis SG. Comparative Safety of Simultaneous and Staged Anterior and Posterior Spinal Surgery. Spine. 2012 37(3):247-55.
  18. Passias PG, Kozanek M, Wood KB. Surgical Treatment of Low Grade Isthmic Spondylolisthesis with Trans-sacral Fibular Strut Grafts. Neurosurgery. 2012 70(3):758-63.
  19. Passias PG, Wang S, Kozanek M, Wang S, Wang C.J. Spinal. Relationship Between the Alignment of the Occipitoaxial and Subaxial Cervical Spine in Patients With Congenital Atlantoxial Dislocations. J Spinal Disord Tech. 2013 26:15-21.
  20. Wan Z, Wang S, Kozánek M, Passias PG, Mansfield FL, Wood KB, Li G. Biomechanical Evaluation of the X-Stop Device for Surgical Treatment of Lumbar Spinal Stenosis. J Spinal Disord Tech. 2012 25(7) 374-8.
  21. Passias PG, Wang S, Zhao D, Wang S, Kozanek M, Wang C. The Reversibility of Swan Neck Deformity in Chronic Atlantoaxial Dislocations. Spine. 38(7):E379-85.
  22. Passias PG, Wang S, Wang S. Combined ossification of the Posterior longitudinal ligament at C2-3 and invagination of the Posterior axis resulting in Myelopathy. Eur Spine J. 2013 38(7):E379-85, 2013.
  23. Wang S, Passias PG, Cui L, Li G, Yan M, Zhou H, Wang C. Does atlantoaxial dislocation influence the subaxial cervical spine? Eur Spine J. 2013 Jul;22(7):1603-7.
  24. Yoshihara H, Passias PG, Errico TJ. Screw related complications in the subaxial cervical spine with the use of lateral mass versus cervical pedicle screws; a systematic review of the present literature. J Neurosurg Spine. 2013 Nov;19(5):614-23.
  25. Marascalchi BJ, Passias PG, Goz V, Weinreb JH, Joo L, Errico TJ. Comparative Analysis of Cauda Equina Syndrome (CES) Patients versus an Unaffected Population Undergoing Spinal Surgery. Spine. 2014 Mar 15;39(6):482-90.
  26. Yang SY, Boniello AJ, Poorman CE, Chang AL, Wang S, Passias PG. A review of the diagnosis and treatment of atlantoaxial dislocations. Global Spine J. 2014 Aug;4(3):197-210.
  27. Zhao D, Passias PG, Wang S, Wang C. Craniocervical Instability in Os Odontoideum: Etiology, Presentation, Surgical Treatment and Outcomes in a Series of 279 Cases. Neurosurgery. 2015 May;76(5):514-21.
  28. Poorman CE, Passias PG, Bianco KM, Boniello A, Yang S, Gerling MC. Effectiveness of postoperative wound drains in one- and two-level cervical spine fusions. Int J Spine Surg. 2014 Dec 1;8.
  29. Cook CE, Arnold PM, Passias PG, Frempong-Boadu AK, Radcliff K, Isaacs R; Association for Collaborative Spine Research (ACSR). Predictors of pain and disability outcomes in one thousand, one hundred and eight patients who underwent lumbar discectomy surgery. Int Orthop. 2015 Nov;39(11):2143-51.
  30. Oh T, Scheer JK, Eastlack R, Smith JS, Lafage V, Protopsaltis TS, Klineberg E, Passias PG, Deviren V, Hostin R, Gupta M, Bess S, Schwab F, Shaffrey CI, Ames CP; International Spine Study Group. Cervical compensatory alignment changes following correction of adult thoracic deformity: a multicenter experience in 57 patients with a 2-year follow-up. J Neurosurg Spine. 2015 Jun;22(6):658-65.
  31. Passias PG, Soroceanu A, Smith J, Boniello A, Yang S, Scheer JK, Schwab F, Shaffrey C, Kim HJ, Protopsaltis T, Mundis G, Gupta M, Klineberg E, Lafage V, Ames C; International Spine Study Group. Postoperative cervical deformity in 215 thoracolumbar patients with adult spinal deformity: prevalence, risk factors, and impact on patient-reported outcome and satisfaction at 2-year follow-up. Spine. 2015 Mar 40(5): 283-91.
  32. Passias PG, Soroceanu A, Scheer J, Yang S, Boniello A, Smith J, Protopsaltis T, Kim HJ, Schwab F, Gupta M, Klineberg E, Mundis G, Shaffrey C, Lafage R, Hart R, Lafage V, Ames C; ISSG. Magnitude of Preoperative Cervical Lordotic Compensation and C2-T3 Angle are Correlated to Increased Risk of Post-operative Sagittal Spinal Pelvic Malalignment in Adult Thoracolumbar Deformity Patients at 2-year Follow-up. Accepted to The Spine Journal, April 2015.
  33. Jalai CM, Worley N, Marascalchi B, Challier V, Vira S, Yang S, Boniello A, Bendo J, Lafage V, Passias PG. The Impact of Advanced Age on Peri-Operative Outcomes in the Surgical Treatment of Cervical Spondylotic Myelopathy. Spine, August, 2015.
  34. Passias PG, Poorman CE, Yang S, Boniello A, Jalai CM, Worley N, Lafage V. Surgical Treatment Strategies for High-Grade Spondylolisthesis: A Systematic Review. International Journal of Spine Surgery, 2015. Predictors of morbidity and mortality among patients with cervical spondylotic myelopathy treated surgically.
  35. Kaye ID, Marascalchi BJ, Macagno AE, Lafage VA, Bendo JA, Passias PG. Eur Spine J. 2015 May 23. [Epub ahead of print]33.
  36. Wei F, Liu Z, Liu X, Jiang L, Dang G, Passias PG, Yu M, Wu F, Dang L. An Approach to Primary Tumors of the Upper Cervical Spine With Spondylectomy Using a Combined Approach: Our Experience with 19 Cases. Spine. 2015.
  37. Worley N, Marascalchi B, Jalai CM, Yang S, Diebo B, Vira S, Boniello A, Lafage V, Passias PG. Predictors of Inpatient Morbidity and Mortality in Adult Spinal Deformity Surgery. European Spine Journal, July, 2015.
  38. Macagno A, Liu S, Marascalchi BJ, Yang S, Boniello AJ, Bendo JA, Lafage V, Passias PG. Peri-Operative Risks Associated with Cervical Spondylotic Myelopathy Based on Surgical Treatment Strategies. Accepted to the International Journal of Spine Surgery, June 2015.
  39. Diebo BG, Passias PG, Marascalchi BJ, Jalai CM, Worley NJ, Yang S, Errico TJ, Lafage V. Primary Versus Revision Surgery in the Setting of Adult Spinal Deformity: A Nationwide Study on 10,912 Patients. Spine. Aug 2015.
  40. Leven D, Passias PG, Errico TJ, Lafage V, Bianco K, Lee A, Lurie JD, Tosteson TD, Zhao W, Spratt KF, Morgan TS, Gerling MC. Risk Factors for Reoperation in Patients Treated Surgically for Intervertebral Disc Herniation: A Subanalysis of Eight-Year SPORT Data. J Bone Joint Surg Am. 2015 Aug 19;97(16):1316-25.
  41. Boniello A, Hasan S, Yang S, Jalai C, Worley N, Passias PG. Selective versus Non-Selective Thoracic Fusion in Lenke 1C Curves: A Meta-Analysis of Baseline Characteristics and Post-Operative Outcomes. Accepted to Journal of Neurosurgery: Spine, January 2015.
  42. Scheer JK, Passias PG, Sorocean AM, Boniello AJ, Mundis GM Jr, Klineberg E, Kim HJ, Protopsaltis TS, Gupta M, Bess S, Shaffrey CI, Schwab F, Lafage V, Smith JS, Ames CP; International Spine Study Group. Association between preoperative cervical sagittal deformity and inferior outcomes at 2-year follow-up in patients with adult thoracolumbar deformity: analysis of 182 patients. J Neurosurg Spine. 2015 Sep. [Epub ahead of print]
  43. Park P, Okonkwo DO, Nguyen S, Mundis GM Jr, Than KD, Deviren V, La Marca F, Fu KM, Wang MY, Uribe JS, Anand N, Fessler R, Nunley PD, Chou D, Kanter AS, Shaffrey CI, Akbarnia BA, Passias PG, Eastlack RK, Mummaneni PV; Can a Minimal Clinically Important Difference Be Achieved in Elderly Patients With Adult Spinal Deformity Who Undergo Minimally Invasive Spinal Surgery? International Spine Study Group. World Neurosurg. 2015 Sep 29. [Epub ahead of print]
  44. Passias PG, Poorman CE, Yang S, Boniello AJ, Jalai CM, Worley N, Lafage V. Surgical Treatment Strategies for High-Grade Spondylolisthesis: A Systematic Review. Int J Spine Surg. 2015 Oct 1;9:50.
  45. Liu S, Diebo B, Henry JK, Smith JS, Hostin R, Cunningham ME, Mundis G, Ames CP, Burton D, Bess S, Akbarnia B, Hart R, Passias PG, Schwab FJ, Lafage V. The benefit of non-operative treatment for adult spinal deformity: identifying predictors for reaching a minimal clinically important difference. International Spine Study Group (ISSG). Spine J. 2015 Oct 30.
  46. Gupta M, Henry JK, Schwab F, Klineberg E, Smith JS, Gum J, Jr DW, Liabaud B, Diebo BG, Hamilton DK, Eastlack R, Passias PG, Burton D, Protopsaltis T, Lafage V; International Spine Study Group. Dedicated Spine Measurement Software (SMS) Quantifies Key Spino-Pelvic Parameters More Reliably Than Traditional PACS Tools. Spine. 2016 Jan;41:E22-7.
  47. Smith JS, Ramchandran S, Lafage V, Shaffrey CI, Ailon T, Klineberg E, Protopsaltis T, Schwab FJ, OʼBrien M, Hostin R, Gupta M, Mundis G, Hart R, Kim HJ, Passias PG, Scheer JK, Deviren V, Burton DC, Eastlack R, Bess S, Albert TJ, Riew KD, Ames CP; International Spine Study Group. Prospective Multicenter Assessment of Early Complication Rates Associated With Adult Cervical Deformity Surgery in 78 Patients. Neurosurgery. 2015 Nov 19. [Epub ahead of print].
  48. Klineberg EO, Passias PG, Jalai CM, Worley N, Sciubba DM, Burton DC, Gupta MC, Soroceanu A, Zebala LP, Mundis GM Jr, Kim HJ, Hamilton DK, Hart RA, Ames CP, Lafage V; International Spine Study Group. Predicting Extended Length of Hospital Stay in an Adult Spinal Deformity Surgical Population. Spine. 2015 Dec 14. [Epub ahead of print].
  49. Gerling MC, Leven D, Passias PG, Lafage V, Bianco K, Lee A, Lurie JD, Tosteson TD, Zhao W, Spratt KF, Radcliff K, Errico TJ. Risk Factors for Reoperation in Patients Treated Surgically for Lumbar Stenosis: A Subanalysis of the 8 year data from the SPORT trial. Spine. [Epub ahead of print].
  50. Wang S, Yan M, Passias PG, Wang C. Atlantoaxial Rotatory Fixed Dislocation: Report on a Series of 32 Pediatric Cases. Spine. 2015 Dec 24. [Epub ahead of print].
  51. De la Garza-Ramos R, Passias PG, Schwab FJ, Lafage V, Sciubba DM. The effect of July admission on inpatient morbidity and mortality after adult spinal deformity surgery. Int J Spine Surg. 2016 Jan 8;10:3.
  52. Jalai CM, Worley N, Marascalchi BJ, Challier V, Vira S, Yang S, Boniello AJ, Bendo JA, Lafage V, Passias PG. The Impact of Advanced Age on Peri-Operative Outcomes in the Surgical Treatment of Cervical Spondylotic Myelopathy: A Nationwide Study Between 2001 and 2010. Spine (Phila Pa 1976). 2016 Feb;41(3):E139-47.
  53. Hamilton DK, Kanter AS, Bolinger BD, Mundis GM Jr, Nguyen S, Mummaneni PV, Anand N, Fessler RG, Passias PG, Park P, La Marca F, Uribe JS, Wang MY, Akbarnia BA, Shaffrey CI, Okonkwo DO. Reoperation rates in minimally invasive, hybrid and open surgical treatment for adult spinal deformity with minimum 2-year follow-up. International Spine Study Group (ISSG). Eur Spine J. 2016 Feb 24. [Epub ahead of print]
  54. Passias PG, Klineberg EO, Jalai CM, Worley N, Poorman GW, Line B, Oh C, Burton DC, Kim HJ, Sciubba DM, Hamilton DK, Ames CP, Smith JS, Shaffrey CI, Lafage V, Bess S. Hospital Readmission Within 2 Years Following Adult Thoracolumbar Spinal Deformity Surgery: Prevalence, Predictors, and Effect on Patient-derived Outcome Measures. Spine (Phila Pa 1976). 2016 Sep;41(17):1355-64. doi: 10.1097/BRS.0000000000001552.
  55. Hospital Readmission within Two Years Following Adult Thoracolumbar Spinal Deformity Surgery: Prevalence, Predictors, and Effect on Patient-Derived Outcome Measures. Spine (Phila Pa 1976). 2016 Mar 8. [Epub ahead of print]
  56. Macagno AE, Hasan S, Jalai CM, Worley N, de Moura AB, Spivak J, Bendo JA, Passias PG. "Reverse Bohlman" technique for the treatment of high grade spondylolisthesis in an adult population. J Orthop. 2016 Jan 22;13:1-9.
  57. De la Garza-Ramos R, Jain A, Kebaish KM, Bydon A, Passias PG, Sciubba DM. Inpatient morbidity and mortality after adult spinal deformity surgery in teaching versus nonteaching hospitals. J Neurosurg Spine. 2016 Mar 4:1-6. [Epub ahead of print]
  58. De la Garza-Ramos R, Passias PG, Schwab FJ, Lafage V, Sciubba DM. The effect of July admission on inpatient morbidity and mortality after adult spinal deformity surgery. Int J Spine Surg. 2016 Jan 8;10:3.
  59. Passias PG, Soroceanu A, Yang S, Schwab F, Ames C, Boniello A, Smith J, Shaffrey C, Boachie-Adjei O, Mundis G, Burton D, Klineberg E, Hart R, Hamilton DK, Sciubba DM, Bess S, Lafage V. Predictors of Revision Surgical Procedure Excluding Wound Complications in Adult Spinal Deformity and Impact on Patient-Reported Outcomes and Satisfaction: A Two-Year Follow-up. J Bone Joint Surg Am. 2016 Apr 6;98(7):536-43. PMID: 27053581
  60. Diebo BG, Lafage R, Ames CP, Bess S, Obeid I, Klineberg E, Cunningham ME, Smith JS, Hostin R, Liu S, Passias PG, Schwab FJ, Lafage V, International Spine Study Group. Ratio of lumbar 3-column osteotomy closure: patient-specific deformity characteristics and level of resection impact correction of truncal versus pelvic compensation. Eur Spine J. 2016 Aug;25(8):2480-7. Epub 2016 Mar 22. PMID:27002615
  61. Jalai CM, Passias PG, Lafage V, Smith JS, Lafage R, Poorman GW, Diebo B, Liabaud B, Neuman BJ, Scheer JK, Shaffrey CI, Bess S, Schwab F, Ames CP; International Spine Study Group (ISSG). A comparative analysis of the prevalence and characteristics of cervical malalignment in adults presenting with thoracolumbar spine deformity based on variations in treatment approach over 2 years. Eur Spine J. 2016 Apr 13. [Epub ahead of print].
  62. Smith JS, Klineberg E, Shaffrey CI, Lafage V, Schwab FJ, Protopsaltis T, Scheer JK, Ailon T, Ramachandran S, Daniels A, Mundis G, Gupta M, Hostin R, Deviren V, Eastlack R, Passias PG, Hamilton DK, Hart R, Burton DC, Bess S, Ames CP International Spine Study Group. Assessment of Surgical Treatment Strategies for Moderate to Severe Cervical Spinal Deformity Reveals Marked Variation in Approaches, Osteotomies and Fusion Levels. World Neurosurg. 2016 [Epub ahead of print].
  63. Passias PG, Oh C, Jalai CM, Worley N, Lafage R, Scheer JK, Klineberg EO, Hart RA, Kim HJ, Smith JS, Lafage V, Ames CP; International Spine Study Group (ISSG). Predictive Model for Cervical Alignment and Malalignment Following Surgical Correction of Adult Spinal Deformity. Spine. 2016 Apr 19. [Epub ahead of print]
  64. McClelland S 3rd, Marascalchi BJ, Passias PG, Protopsaltis TS, Frempong-Boadu AK, Errico TJ. Impact of Race and Insurance Status on Surgical Approach for Cervical Spondylotic Myelopathy in the United States: a Population-Based Analysis. Spine. 2016 May 18. [Epub ahead of print].
  65. De la Garza-Ramos R, Goodwin CR, Abu-Bonsrah N, Jain A, Miller EK, Neuman BJ, Protopsaltis TS, Passias PG, Sciubba DM. Prolonged length of stay after Posterior surgery for cervical spondylotic myelopathy in patients over 65years of age. J Clin Neurosci. 2016 May 24. [Epub ahead of print].
  66. De la Garza Ramos R, Passias PG, Schwab F, Bydon A, Lafage V, Sciubba DM. Incidence, Risk Factors, and Mortality of Reintubation in Adult Spinal Deformity Surgery. Clin Spine Surg. 2016 Jun 27. [Epub ahead of print].
  67. Scheer JK, Ailon TT, Smith JS, Hart R, Burton DC, Bess S, Neuman BJ, Passias PG, Miller E, Shaffrey CI, Schwab F, Lafage V, Klineberg E, Ames CP. Predictive Modeling of Length of Hospital Stay Following Adult Spinal Deformity Correction: Analysis of 653 Patients With an Accuracy of 75% Within 2 Days. Neurosurgery. 2016 Aug;63 Suppl 1:166-7.
  68. Mok JM, Martinez M, Smith HE, Sciubba DM, Passias PG, Schoenfeld A, Isaacs RE, Vaccaro AR, Radcliff KE. Impact of a Bundled Payment System on Resource Utilization During Spine Surgery. Association for Collaborative Spine Research Investigators. Int J Spine Surg. 10:19. 2016 May 16.
  69. De la Garza Ramos R, Goodwin CR, Qadi M, Abu-Bonsrah N, Passias PG, Lafage V, Schwab F, Sciubba DM. The Impact of Smoking on 30-day Morbidity and Mortality in Adult Spinal Deformity Surgery. Spine (Phila Pa 1976). 2016 Jul 18. [Epub ahead of print]
  70. McClelland S 3rd, Oren JH, Protopsaltis TS, Passias PG. Outpatient anterior cervical discectomy and fusion: A meta-analysis. J Clin Neurosci. 2016 Jul 27.
  71. Day LM, Ramchandran S, Jalai CM, Diebo BG, Liabaud B, Lafage R, Protopsaltis T, Passias PG, Schwab FJ, Bess S, Errico TJ, Lafage V, Buckland AJ. Thoracolumbar Realignment Surgery Results in Simultaneous Reciprocal Changes in Lower Extremities and Cervical Spine. Spine (Phila Pa 1976). 2016 Oct 17.
  72. Hamilton DK, Kong C, Hiratzka J, Contag AG, Ailon T, Line B, Daniels A, Smith JS, Passias P, Protopsaltis T, Sciubba D, Burton D, Shaffrey C, Klineberg E, Mundis G, Kim HJ, Lafage V, Lafage R, Scheer J, Boachie-Adjei O, Bess S, Hart R. Patient Satisfaction after Adult Spinal Deformity Surgery Does Not Strongly Correlate with Health-Related Quality of Life Scores, Radiographic Parameters or Occurrence of Complications. Spine (Phila Pa 1976). 2016 Sep 29.
  73. Vira S, Husain Q, Jalai C, Paul J, Poorman GW, Poorman C, Yoon RS, Looze C, Lonner B, Passias PG. The Interobserver and Intraobserver Reliability of the Sanders Classification Versus the Risser Stage. J Pediatr Orthop. 2016 Nov 17. [Epub ahead of print].
  74. Jalai CM, Diebo BG, Cruz DL, Poorman GW, Vira S, Buckland AJ, Lafage R, Bess S, Errico TJ, Lafage V, Passias PG. The impact of obesity on compensatory mechanisms in response to progressive sagittal malalignment. Spine J. 2016 S1529-9430(16)31110-X. [Epub ahead of print].
  75. Poorman GW, Passias PG, Buckland AJ, Jalai CM, Kelly M, Sciubba DM, Neuman BJ, Hamilton DK, Jain A, Diebo B, Lafage V, Bess S, Klineberg EO; International Spine Study Group (ISSG). Comparative Analysis of Peri-operative Outcomes Using Nationally Derived Hospital Discharge Data Relative to a Prospective Multi-Center Surgical Database of Adult Spinal Deformity Surgery. Spine (Phila Pa 1976). [Epub ahead of print].
  76. Full-Body Analysis of Age-Adjusted Alignment in Adult Spinal Deformity Patients and Lower-Limb Compensation. Jalai CM, Cruz DL, Diebo BG, Poorman G, Lafage R, Bess S, Ramachandran S, Day LM, Vira S, Liabaud B, Henry JK, Schwab FJ, Lafage V, Passias PG. Spine (Phila Pa 1976). 2016 Aug 23 [Epub ahead of print]
  77. Morbidity of Adult Spinal Deformity Surgery in Elderly Has Declined Over Time. Passias PG, Poorman GW, Jalai CM, Neuman B, de la Garza-Ramos R, Miller E, Jain A, Sciubba D, McClelland S, Day L, Ramachadran S, Vira S, Diebo B, Isaacs E, Bono O, Bess S, Gerling M, Lafage V. Spine (Phila Pa 1976). 2017 Jan 4. [Epub ahead of print]
  78. National Administrative Databases in Adult Spinal Deformity Surgery - A Cautionary Tale. Buckland AJ, Poorman G, Freitag R, Jalai C, Klineberg EO, Kelly M, Passias PG. Spine (Phila Pa 1976). 2017 Jan 6. [Epub ahead of print]
  79. McClelland S 3rd, Marascalchi BJ, Passias PG, Protopsaltis TS, Frempong-Boadu AK, Errico TJ. Operative fusion of multilevel cervical spondylotic myelopathy: Impact of patient demographics. J Clin Neurosci. 2017 Jan 10. [Epub ahead of print] PMID: 28087188.
  80. Gomez JA, Lafage V, Scuibba DM, Bess S, Mundis GM Jr, Liabaud B, Hanstein R, Shaffrey C, Kelly M, Ames C, Smith JS, Passias PG, Errico T, Schwab F; International Spine Study Group.  Spine (Phila Pa 1976). 2017 Jan 16. [Epub ahead of print] PMID: 28098740.
  81. Scheer JK, Ailon TT, Smith JS, Hart R, Burton DC, Bess S, Neuman BJ, Passias PG, Miller E, Shaffrey CI, Schwab F, Lafage V, Klineberg E, Ames CP. Predictive Modeling of Length of Hospital Stay Following Adult Spinal Deformity Correction: Analysis of 653 Patients With an Accuracy of 75% Within 2 Days. Neurosurgery. 2016 Aug 1;63(CN_suppl_1):166-167. PMID: 2817541.
  82. Diebo BG, Jalai CM, Challier V, Marascalchi BJ, Horn SR, Poorman GW, Bono OJ, Cherkalin D, Worley N, Oh J, Naziri Q, Spitzer A, Radcliff K, Patel A, Lafage V, Paulino CB, Passias PG. Novel Index to Quantify the Risk of Surgery in the Setting of Adult Spinal Deformity: A Study on 10,912 Patients From the Nationwide Inpatient Sample. Clin Spine Surg. 2017 Feb 6. [Epub ahead of print] PMID: 28169941.
  83. Cuellar J, Passias P. Cervical Spondylotic Myelopathy A Review of Clinical Diagnosis and Treatment. Bull Hosp Jt Dis (2013). 2017 Jan;75:21-29.
  84. Bao H, Varghese J, Lafage R, Liabaud B, Diebo B, Ramchandran S, Day L, Jalai C, Cruz D, Errico T, Protopsaltis T, Passias PG, Buckland A, Qiu Y, Schwab F, Lafage V. Principal radiographic characteristics for cervical spinal deformity: A health-related quality of life analysis. Spine (Phila Pa 1976). 2017 Mar 8. [Epub ahead of print] PMID:
  85.  De la Garza Ramos R, Goodwin CR, Passias PG, Neuman BJ, Kebaish KM, Lafage V, Schwab F, Sciubba DM. Timing of Complications Occurring Within 30 Days After Adult Spinal Deformity Surgery. Spine Deform. 2017 Mar;5(2):145-150.
  86. Bao H, Varghese J, Lafage R, Liabaud B, Diebo B, Ramchandran S, Day L, Jalai C, Cruz D, Errico T, Protopsaltis T, Passias PG, Buckland A, Qiu Y, Schwab F, Lafage V. Principal radiographic characteristics for cervical spinal deformity: A health-related quality of life analysis. Spine (Phila Pa 1976). 2017 Mar 8. [Epub ahead of print] PMID: 28277386
  87. Poorman GW, Jalai CM, Boniello A, Worley N, McClelland S 3rd, Passias PG. Bone morphogenetic protein in adult spinal deformity surgery: a meta-analysis. Eur Spine J. 2017 Mar 9. [Epub ahead of print] PMID: 28281003
  88. Smith JS, Shaffrey CI, Lafage R, Lafage V, Schwab FJ, Kim HJ, Scheer JK, Protopsaltis T, Passias PG, Mundis G, Hart R, Neuman B, Klineberg E, Hostin R, Bess S, Deviren V, Ames CP; ISSG. Three-column osteotomy for correction of cervical and cervicothoracic deformities: alignment changes and early complications in a multicenter prospective series of 23 patients. Eur Spine J. 2017 Mar 30. [Epub ahead of print] PMID: 28361367
  89. Jalai CM, Wang C, Marascalchi BJ, Horn SR, Poorman GW, Bono OJ, Frempong-Boadu AK, Passias PG. Trends in the presentation, surgical treatment, and outcomes of tethered cord syndrome: A nationwide study from 2001 to 2010. J Clin Neurosci. 2017 Mar 22. pii: S0967-5868(17)30014-0. [Epub ahead of print] PMID: 28342704
  90. Passias PG, Poorman GW, Jalai CM, Line B, Diebo B, Park P, Hart R, Burton D, Schwab F, Lafage V, Bess S, Errico T; International Spine Study Group. Outcomes of open staged corrective surgery in the setting of adult spinal deformity. Spine J. 2017 Mar 21. pii: S1529-9430(17)30099-2. [Epub ahead of print] PMID: 28341194
  91. McClelland S 3rd, Passias PG, Errico TJ, Bess RS, Protopsaltis TS. Outpatient Anterior Cervical Discectomy and Fusion: An Analysis of Readmissions from the New Jersey State Ambulatory Services Database. Int J Spine Surg. 2017 Jan 10;11:3. PMID: 28377861
  92. Smith JS, Line B, Bess S, Shaffrey CI, Kim HJ, Mundis G, Scheer JK, Klineberg E, O'Brien M, Hostin R, Gupta M, Daniels A, Kelly M, Gum JL, Schwab FJ, Lafage V, Lafage R, Ailon T, Passias PG, Protopsaltis T, Albert TJ, Riew KD, Hart R, Burton D, Deviren V, Ames CP, ISSG. The Health Impact of Adult Cervical Deformity in Patients Presenting for Surgical Treatment: Comparison to United States Population Norms and Chronic Disease States Based on the EuroQuol-5 Dimensions Questionnaire. Neurosurgery. 2017 Mar 24. [Epub ahead of print] PMID: 28368524
  93. Smith JS, Shaffrey CI, Lafage R, Lafage V, Schwab FJ, Kim HJ, Scheer JK, Protopsaltis T, Passias PG, Mundis G, Hart R, Neuman B, Klineberg E, Hostin R, Bess S, Deviren V, Ames CP; ISSG. Three-column osteotomy for correction of cervical and cervicothoracic deformities: alignment changes and early complications in a multicenter prospective series of 23 patients. Eur Spine J. 2017 Mar 30. [Epub ahead of print] PMID: 28361367
  94. Smith JS, Line B, Bess S, Shaffrey CI, Kim HJ, Mundis G, Scheer JK, Klineberg E, O'Brien M, Hostin R, Gupta M, Daniels A, Kelly M, Gum JL, Schwab FJ, Lafage V, Lafage R, Ailon T, Passias PG, Protopsaltis T, Albert TJ, Riew KD, Hart R, Burton D, Deviren V, Ames CP, ISSG. The Health Impact of Adult Cervical Deformity in Patients Presenting for Surgical Treatment: Comparison to United States Population Norms and Chronic Disease States Based on the EuroQuol-5 Dimensions Questionnaire. Neurosurgery. 2017 Mar 24. [Epub ahead of print]. PMID: 28368524
  95. McClelland S 3rd, Passias PG, Errico TJ, Bess RS, Protopsaltis TS. Outpatient Anterior Cervical Discectomy and Fusion: An Analysis of Readmissions from the New Jersey State Ambulatory Services Database. Int J Spine Surg. 2017 Jan 10;11:3. PMID: 28377861
  96. Gerling MC, Leven D, Passias PG, Lafage V, Bianco K, Lee A, Morgan TS, Lurie JD, Tosteson TD, Zhao W, Spratt KF, Radcliff K, Errico TJ. Risks Factors For Reoperation in Patients Treated Surgically for Degenerative Spondylolisthesis: A Subanalysis of the 8 Year Data From the SPORT Trial. Spine (Phila Pa 1976). 2017 Apr 10. [Epub ahead of print] PMID: 28399551
  97. Goldschmidt E, Angriman F, Ferreyro B, Agarwal N, Zhou J, Chen K, Tempel ZJ, Gerszten PC, Kanter AS, Okonkwo DO, Passias P, Scheer J, Protopsaltis T, Lafage V, Lafage R, Schwab F, Bess S, Ames C, Smith JS, Burton D, Hamilton DK; International Spine Study Group (ISSG). Design and Testing of 2 Novel Scores That Predict Global Sagittal Alignment Utilizing Cervical or Lumbar Plain Radiographs. Neurosurgery. 2017 Apr 17. [Epub ahead of print]. PMID: 28419292
  98. Passias PG, Jalai CM, Smith JS, Lafage V, Diebo BG, Protopsaltis T, Poorman G, Ramchandran U, Bess H, Shaffrey CI, Ames CP, Schwab F; International Spine Study Group. Characterizing Adult Cervical Deformity and Disability Based on Existing Cervical and Adult Deformity Classification Schemes at Presentation and Following Correction. Neurosurgery. 2017 [Epub ahead of print] PMID: 28575457
  99. Poorman GW, Jalai CM, Diebo B, Vira S, Buza J, Baker J, Tishelman J, Horn S, Bono O, Shenoy K, Hasan S, Paul J, Isaacs E, Kaye I, Atanda A, Buckland AJ, LaFage V, Errico T, Passias PG. Congenital Etiology is an Independent Risk Factor for Complications in Adolescents Undergoing Corrective Scoliosis Surgery: Comparison of In-hospital Comorbidities Using Nationwide KID's Inpatient Database. J Pediatr Orthop. 2017 Apr 24. doi: 10.1097/BPO.0000000000000990. [Epub ahead of print]. PMID: 28441279
  100. Passias PG, Horn SR, Jalai CM, Poorman G, Bono OJ, Ramchandran S, Smith JS, Scheer JK, Sciubba DM, Hamilton DK, Mundis G, Oh C, Klineberg EO, Lafage V, Shaffrey CI, Ames CP; International Spine Study Group. Comparative analysis of perioperative complications between a multicenter prospective cervical deformity database and the Nationwide Inpatient Sample database. Spine J. 2017 May 17. pii: S1529-9430(17)30210-3. doi: 10.1016/j.spinee.2017.05.018. [Epub ahead of print] PMID: 28527757
  101. Neuman BJ, Ailon T, Scheer JK, Klineberg E, Sciubba DM, Jain A, Zebala LP, Passias PG, Daniels AH, Burton DC, Protopsaltis TS, Hamilton DK, Ames CP. Development and Validation of a Novel Adult Spinal Deformity Surgical Invasiveness Score: Analysis of 464 Patients. Neurosurgery. 2017 [Epub ahead of print] PMID: 28586476
  102. Bao H, Lafage R, Liabaud B, Elysée J, Diebo BG, Poorman G, Jalai C, Passias PG, Buckland A, Bess S, Errico T, Lenke LG, Gupta M, Kim HJ, Schwab F, Lafage V. Three types of sagittal alignment regarding compensation in asymptomatic adults: the contribution of the spine and lower limbs. Eur Spine J. 2017 [Epub ahead of print] PMID: 28589303
  103. Protopsaltis TS, Lafage R, Vira S, Sciubba D, Soroceanu A, Hamilton K, Smith J, Passias PG, Mundis G, Hart R, Schwab F, Klineberg E, Shaffrey C, Lafage V, Ames C; ISSG. Novel Angular Measures of Cervical Deformity Account for Upper Cervical Compensation and Sagittal Alignment. Clin Spine Surg. 2017 Jun 23. [Epub ahead of print] PMID:28650879
  104. Gerling MC, Passias P, Radcliff K, Isaacs R, Bianco K, Jalai CM, Worley NJ, Parmar J, Poorman GW, Horn SR, Moon JY, Arnold PM, Vaccaro AR. Two-Year Results of the Prospective Spine Treatment Outcomes Study: An Analysis of Complication Rates, Predictors of Their Development, and Effect on Patient Derived Outcomes at 2 Years for Surgical Management of Cervical Spondylotic Myelopathy. World Neurosurg. 2017 Jun 30. pii: S1878-8750(17)31044-6. [Epub ahead of print] No abstract available.  PMID:28673888
  105. Passias PG, Jalai CM, Line BG, Poorman GW, Scheer JK, Smith JS, Shaffrey CI, Burton DC, Fu KG, Klineberg EO, Hart RA, Schwab F, Lafage V, Bess S; ISSG. Patient profiling can identify adult spinal deformity (ASD) patients at risk for conversion from nonoperative to surgical treatment; initial steps to reduce ineffective ASD management. Spine J. 2017 Jul 5. pii: S1529-9430(17)30318-2. [Epub ahead of print] PMID: 28688984
  106. Hamilton DK, Buza JA 3rd, Passias P, Jalai C, Kim HJ, Ailon T, Gupta M, Sciubba D, Jain A, Ames CP, Deviren V, Daniels A, Lafage V, Bess S, Klineberg E, Shaffrey CI, Smith JS, Hart R; International Spine Study Group. The Fate of Patients with Adult Spinal Deformity Incurring Rod Fracture After Thoracolumbar Fusion. World Neurosurg. 2017 Jul 20. pii: S1878-8750(17)31161-0. [Epub ahead of print] PMID: 28735127
  107. Poorman GW, Passias PG, Buckland AJ, Jalai CM, Kelly M, Sciubba DM, Neuman BJ, Hamilton DK, Jain A, Diebo B, Lafage V, Bess S, Klineberg EO; International Spine Study Group (ISSG). Comparative Analysis of Perioperative Outcomes Using Nationally Derived Hospital Discharge Data Relative to a Prospective Multicenter Surgical Database of Adult Spinal Deformity Surgery. Spine (Phila Pa 1976). 2017 Aug 1;42(15):1165-1171. PMID: 28742736
  108. Passias PG, Jalai CM, Worley N, Vira S, Marascalchi B, McClelland S 3rd, Lafage V, Errico TJ. Adult Spinal Deformity: National Trends in the Presentation, Treatment, and Perioperative Outcomes From 2003 to 2010. Spine Deform. 2017 Sep;5(5):342-350. doi: 10.1016/j.jspd.2017.02.002. PMID: 28882352
  109. McClelland S 3rd, Kim E, Passias PG, Murphy JD, Attia A, Jaboin JJ. Spinal stereotactic body radiotherapy in the United States: A decade-long nationwide analysis of patient demographics, practice patterns, and trends over time. J Clin Neurosci. 2017 Aug 29. pii: S0967-5868(17)30932-3. doi: 10.1016/j.jocn.2017.08.007. [Epub ahead of print] PMID: 28864408
  110. Passias PG, Diebo BG, Marascalchi BJ, Jalai CM, Horn SR, Zhou PL, Paltoo K, Bono OJ, Worley N, Poorman GW, Challier V, Dixit A, Paulino C, Lafage V. A novel index for quantifying the risk of early complications for patients undergoing cervical spine surgeries. J Neurosurg Spine. 2017 Aug 25:1-7. doi: 10.3171/2017.3.SPINE16887. [Epub ahead of print]. PMID: 28841106
  111. Jain A, Hassanzadeh H, Puvanesarajah V, Klineberg EO, Sciubba DM, Kelly MP, Hamilton DK, Lafage V, Buckland AJ, Passias PG, Protopsaltis TS, Lafage R, Smith JS, Shaffrey CI, Kebaish KM; International Spine Study Group. Incidence of perioperative medical complications and mortality among elderly patients undergoing surgery for spinal deformity: analysis of 3519 patients. J Neurosurg Spine. 2017 Aug 18:1-6. doi: 10.3171/2017.3.SPINE161011. [Epub ahead of print]. PMID: 28820363
  112. McClelland Iii S, Passias PG, Errico TJ, Bess RS, Protopsaltis TS. Inpatient versus Outpatient Anterior Cervical Discectomy and Fusion: A Perioperative Complication Analysis of 259,414 Patients From the Healthcare Cost and Utilization Project Databases. Int J Spine Surg. 2017 Apr 3;11:11. doi: 10.14444/4011. eCollection 2017. PMID: 28765795
  113. Worley N, Buza J, Jalai CM, Poorman GW, Day LM, Vira S, McClelland Iii S, Lafage V, Passias PG. Diabetes as an Independent Predictor for Extended Length of Hospital Stay and Increased Adverse Post-Operative Events in Patients Treated Surgically for Cervical Spondylotic Myelopathy. Int J Spine Surg. 2017 Apr 3;11:10. doi: 10.14444/4010. eCollection 2017. PMID: 28765794
  114. Protopsaltis TS, Lafage R, Smith JS, Passias PG, Shaffrey CI, Kim HJ, Mundis GM, Ames CP, Burton DC, Bess S, Klineberg E, Hart RA, Schwab FJ, Lafage V; International Spine Study Group. The Lumbar Pelvic Angle (LPA), the Lumbar Component of the T1 Pelvic Angle, Correlates with HRQOL, PI-LL Mismatch and it Predicts Global Alignment. Spine (Phila Pa 1976). 2017 Jul 24. doi: 10.1097/BRS.0000000000002346. [Epub ahead of print] PMID: 28742755
  115. Passias PG, Marascalchi BJ, Boniello AJ, Yang S, Bianco K, Jalai CM, Worley NJ, Horn SR, Lafage V, Bendo JA. Cervical spondylotic myelopathy: National trends in the treatment and peri-operative outcomes over 10years. J Clin Neurosci. 2017 Aug;42:75-80. doi: 10.1016/j.jocn.2017.04.017. Epub 2017 May 2. PMID: 28476459
  116. Diebo BG, Jalai CM, Challier V, Marascalchi BJ, Horn SR, Poorman GW, Bono OJ, Cherkalin D, Worley N, Oh J, Naziri Q, Spitzer A, Radcliff K, Patel A, Lafage V, Paulino CB, Passias PG. Novel Index to Quantify the Risk of Surgery in the Setting of Adult Spinal Deformity: A Study on 10,912 Patients From the Nationwide Inpatient Sample. Clin Spine Surg. 2017 Aug;30(7):E993-E999. doi: 10.1097/BSD.0000000000000509. PMID: 28169941
  117. Morton J, Vira S, Horn SR, Poorman GW, Passias PG. Is Idiopathic Scoliosis Idiopathic? Ann Neurol Surg. 2017; 1: 1004.
  118. Passias PG, Jalai CM, Lafage V, Lafage R, Protopsaltis T, Ramchandran S, Horn S, Poorman G, Gupta M, Hart R, Deviren V, Sorocenu A, Smith JS, Schwab F, Shaffrey CI, Ames CP. Primary Drivers of Adult Cervical Deformity: Prevalence, Variations in Presentation, and Effect of Surgical Treatment Strategies on Early Postoperative Alignment. Neurosurgery. 2017. doi:10.1093/neuros/nyx438.
  119. Radcliff K, Jalai C, Vira S, Yang S, Boniello AJ, Bianco K, Oh C, Gerling M, Poorman G, Horn SR, Buza JA, Isaacs RE, Vaccaro AR, Passias PG. Two-Year Results of the Prospective Spine Treatment Outcomes Study: Analysis of Postoperative Clinical Outcomes Between Patients with and without a History of Previous Cervical Spine Surgery. World Neurosurg. 2018;109:e144–9. doi:10.1016/j.wneu.2017.09.122.
  120. Passias PG, Poorman GW, Jalai CM, Diebo BG, Vira S, Horn SR, Baker JF, Shenoy K, Hasan S, Buza J, Bronson W, Paul JC, Kaye I, Foster NA, Cassilly RT, Oren JH, Moskovich R, Line B, Oh C, Bess S, LaFage V, Errico TJ. Incidence of Congenital Spinal Abnormalities Among Pediatric Patients and Their Association With Scoliosis and Systemic Anomalies. J Pediatr Orthop. 2017. doi:10.1097/BPO.0000000000001066.
  121. Passias PG, Jalai CM, Lafage V, Poorman GW, Vira S, Horn SR, Scheer JK, Hamilton DK, Line BG, Bess S, Schwab FJ, Ames CP, Burton DC, Hart RA, Klineberg EO. Recovery Kinetics of Radiographic and Implant-Related Revision Patients Following Adult Spinal Deformity Surgery. Neurosurgery. 2017. doi:10.1093/neuros/nyx490.
  122. Passias PG, Horn SR, Jalai CM, Ramchandran S, Poorman GW, Kim HJ, Smith JS, Sciubba D, Soroceanu A, Ames CP, Hamilton DK, Eastlack R, Burton D, Gupta M, Bess S, LaFage V, Schwab F. Cervical Alignment Changes in Patients Developing Proximal Junctional Kyphosis Following Surgical Correction of Adult Spinal Deformity. Neurosurgery. 2017. doi:10.1093/neuros/nyx479.
  123. Passias PG, Poorman GW, Segreto FA, Jalai CM, Horn SR, Bortz CA, Vasquez-Montes D, Diebo B, Vira S, Bono OJ, De La Garza-Ramos R, Moon JY, Wang C, Hirsch BP, Zhou PL, Gerling M, Koller H, Lafage V. Traumatic Fractures of the Cervical Spine: Analysis of Changes in Incidence, Cause, Concurrent Injuries, and Complications Among 488,262 Patients from 2005 to 2013. World Neurosurg. 2018;110:e427–37. doi:10.1016/j.wneu.2017.11.011.
  124. Passias PG, Jalai CM, Worley N, Vira S, Hasan S, Horn SR, Segreto FA, Bortz CA, White AP, Gerling M, LaFage V, Errico T. Predictors of Hospital Length of Stay and 30-Day Readmission in Cervical Spondylotic Myelopathy Patients: An Analysis of 3057 Patients Using the ACS-NSQIP Database. World Neurosurg. 2018;110:e450–8. doi:10.1016/j.wneu.2017.11.009.
  125. Bono OJ, Poorman GW, Foster N, Jalai CM, Horn SR, Oren J, Soroceanu A, Ramachandran S, Purvis TE, Jain D, Vira S, Diebo B, Line B, Sciubba DM, Protopsaltis TS, Buckland AJ, Errico TJ, Lafage V, Bess S, Passias PG. Body mass index predicts risk of complications in lumbar spine surgery based on surgical invasiveness. Spine J. 2017. doi:10.1016/j.spinee.2017.11.015.
  126. Ramchandran S, Protopsaltis TS, Sciubba D, Scheer JK, Jalai CM, Daniels A, Passias PG, Lafage V, Kim HJ, Mundis G, Klineberg E, Hart RA, Smith JS, Shaffrey C, Ames CP, International Spine Study Group. Prospective multi-centric evaluation of upper cervical and infra-cervical sagittal compensatory alignment in patients with adult cervical deformity. Eur Spine J  Off Publ Eur Spine Soc  Eur Spinal Deform Soc Eur Sect Cerv Spine Res Soc 2018;27:416–25. doi:10.1007/s00586-017-5395-x.
  127. Poorman GW, Passias PG, Horn SR, Frangella NJ, Daniels AH, Hamilton DK, Kim H, Sciubba D, Diebo BG, Bortz CA, Segreto FA, Kelly MP, Smith JS, Neuman BJ, Shaffrey CI, Lafage V, Lafage R, Ames CP, Hart R, Mundis GM, Eastlack R, International Spine Study Group. Despite worse baseline status depressed patients achieved outcomes similar to those in nondepressed patients after surgery for cervical deformity. Neurosurg Focus 2017;43:E10. doi:10.3171/2017.8.FOCUS17486.
  128. Protopsaltis TS, Ramchandran S, Hamilton K, Sciubba D, Passias PG, Lafage V, Lafage R, Smith JS, Hart RA, Gupta M, Burton D, Bess S, Shaffrey C, Ames CP, International Spine Study Group. Analysis of Successful vs. Failed Radiographic Outcomes following Cervical Deformity Surgery. Spine (Phila Pa 1976) 2017. doi:10.1097/BRS.0000000000002524.
  129. Passias PG, Bortz C, Horn S, Segreto F, Poorman G, Jalai C, Daniels A, Hamilton DK, Kim HJ, Sciubba D, Smith JS, Neuman B, Shaffrey C, Lafage V, Lafage R, Protopsaltis T, Ames C, Hart R, Mundis G, Eastlack R, International Spine Study Group. Drivers of Cervical Deformity Have a Strong Influence on Achieving Optimal Radiographic and Clinical Outcomes at 1 Year After Cervical Deformity Surgery. World Neurosurg 2017. doi:10.1016/j.wneu.2017.12.024.
  130. Diebo BG, Beyer GA, Grieco PW, Liu S, Day LM, Abraham R, Naziri Q, Passias PG, Maheshwari AV, Paulino CB. Complications in Patients Undergoing Spinal Fusion After THA. Clin Orthop Relat Res 2018;476:412–7. doi:10.1007/s11999.0000000000000009.
  131. Diebo BG, Lavian JD, Murray DP, Liu S, Shah N V, Beyer GA, Segreto FA, Bloom L, Vasquez-Montes D, Day LM, Hollern DA, Horn SR, Naziri Q, Cukor D, Passias PG, Paulino CB. The Impact of Comorbid Mental Health Disorders on Complications Following Adult Spinal Deformity Surgery with Minimum 2-Year Surveillance. Spine (Phila Pa 1976) 2018. doi:10.1097/BRS.0000000000002583.
  132. Passias PG, Horn SR, Bortz CA, Ramachandran S, Burton DC, Protopsaltis T, Lafage R, Lafage V, Diebo B, Poorman G, Degreto F, Smith JS, Ames C, Shaffrey CI, Kim HJ, Neuman B, Daniels AH, Soroceanu A, Klineberg E, International Spine Study Group. The Relationship between Improvements in Myelopathy and Sagittal Realignment in Cervical Deformity Surgery Outcomes. Spine (Phila Pa 1976) 2018. doi:10.1097/BRS.0000000000002610.
  133. Raad M, Neuman BJ, Jain A, Hassanzadeh H, Passias PG, Klineberg E, Mundis GM Jr, Protopsaltis TS, Miller EK, Smith JS, Lafage V, Hamilton DK, Bess S, Kebaish KM, Sciubba DM; International Spine Study Group. The use of patient-reported preoperative activity levels as a stratification tool for short-term and long-term outcomes in patients with adult spinal deformity. J Neurosurg Spine. 2018 Apr 6:1-7. doi: 10.3171/2017.10.SPINE17830. [Epub ahead of print].
  134. Passias PG, Poorman GW, Bortz CA, Qureshi R, Diebo BG, Paul JC, Horn SR, Segreto FA, Pyne A, Jalai CM, Lafage V, Bess S, Schwab FJ, Hassanzadeh H. Predictors of adverse discharge disposition in adult spinal deformity and associated costs. Spine J. 2018 Apr 9. pii: S1529-9430(18)30133-5. doi: 10.1016/j.spinee.2018.03.022. [Epub ahead of print].
  135. Safaee MM, Scheer JK, Ailon T, Smith JS, Hart RA, Burton DC, Bess S, Neuman BJ, Passias PG, Miller E, Shaffrey CI, Schwab F, Lafage V, Klineberg EO, Ames CP; International Spine Study Group. Predictive Modeling of Length of Hospital Stay Following Adult Spinal Deformity Correction: Analysis of 653 Patients with an Accuracy of 75% within 2 Days. World Neurosurg. 2018 Apr 17. pii: S1878-8750(18)30780-0. doi: 10.1016/j.wneu.2018.04.064. [Epub ahead of print].
  136. Passias PG, Vasquez-Montes D, Poorman GW, Protopsaltis T, Horn SR, Bortz CA, Segreto F, Diebo B, Ames C, Smith J, LaFage V, LaFage R, Klineberg E, Shaffrey C, Bess S, Schwab F; International Spine Study Group. Predictive model for distal junctional kyphosis after cervical deformity surgery. Spine J. 2018 Apr 27. pii: S1529-9430(18)30190-6. doi: 10.1016/j.spinee.2018.04.017. [Epub ahead of print].
  137. Passias PG, Poorman GW, Delsole E, Zhou PL, Horn SR, Jalai CM, Vira S, Diebo B, Lafage V. Adverse Outcomes and Prediction of Cardiopulmonary Complications in Elective Spine Surgery. Global Spine J. 2018 May;8(3):218-223. doi: 10.1177/2192568217718817. Epub 2017 Oct 24.
  138. De la Garza-Ramos R, Goodwin CR, Abu-Bonsrah N, Jain A, Passias PG, Neuman BJ, Sciubba DM. Predictive Factors for Percutaneous Endoscopic Gastrostomy Tube Placement After Anterior Cervical Fusion. Global Spine J. 2018 May;8(3):260-265. doi: 10.1177/2192568217713010. Epub 2017 Dec 18.
  139. Wang S, Tian Y, Diebo BG, Horn SR, Passias PG. Treatment of atlantoaxial dislocations among patients with cervical osseous or vascular abnormalities utilizing hybrid techniques. J Neurosurg Spine. 2018 May 11:1-9. doi: 10.3171/2017.12.SPINE17632. [Epub ahead of print]
  140. Protopsaltis TS, Lafage R, Smith JS, Passias PG, Shaffrey CI, Kim HJ, Mundis GM, Ames CP, Burton DC, Bess S, Klineberg E, Hart RA, Schwab FJ, Lafage V; International Spine Study Group. The Lumbar Pelvic Angle, the Lumbar Component of the T1 Pelvic Angle, Correlates With HRQOL, PI-LL Mismatch, and it Predicts Global Alignment. Spine (Phila Pa 1976). 2018 May 15;43(10):681-687. doi: 10.1097/BRS.0000000000002346.
  141. Horn SR, Liu TC, Horowitz JA, Oh C, Bortz CA, Segreto FA, Vasquez-Montes D, Steinmetz LM, Deflorimonte C, Vira S, Diebo BG, Neuman BJ, Raad M, Sciubba DM, Lafage R, Lafage V, Hassanzadeh H, Passias PG. Clinical Impact and Economic Burden of Hospital-Acquired Conditions Following Common Surgical Procedures. Spine (Phila Pa 1976). 2018 May 22. doi: 10.1097/BRS.0000000000002713. [Epub ahead of print].
  142. Passias PG, Horn SR, Frangella NJ, Poorman GW, Vasquez-Montes D, Diebo BG, Bortz CA, Segreto FA, Moon JY, Zhou PL, Vira S, Sure A, Beaubrun B, Tishelman JC, Ramchandran S, Jalai CM, Bronson W, Wang C, Lafage V, Buckland AJ, Errico TJ. Full-Body Analysis of Adult Spinal Deformity Patients' Age-Adjusted Alignment at 1 Year. World Neurosurg. 2018 Jun;114:e775-e784. doi: 10.1016/j.wneu.2018.03.079. Epub 2018 Mar 16.
  143. Neuman BJ, Ailon T, Scheer JK, Klineberg E, Sciubba DM, Jain A, Zebala LP, Passias PG, Daniels AH, Burton DC, Protopsaltis TS, Hamilton DK, Ames CP; International Spine Study Group. Development and Validation of a Novel Adult Spinal Deformity Surgical Invasiveness Score: Analysis of 464 Patients. Neurosurgery. 2018 Jun 1;82(6):847-853. doi: 10.1093/neuros/nyx303.
  144. Diebo BG, Shah NV, Solow M, Challier V, Paulino CB, Passias PG, Lafage R, Schwab FJ, Kim HJ, Lafage V. Adult cervical deformity: radiographic and osteotomy classifications. Orthopade. 2018 Jun 7. doi: 10.1007/s00132-018-3581-0. [Epub ahead of print] Review.
  145. Diebo BG, Tishelman JC, Horn S, Poorman GW, Jalai C, Segreto FA, Bortz CA, Gerling MC, Lafage V, White AP, Mok JM, Cha TD, Eastlack RK, Radcliff KE, Paulino CB, Passias PG. The impact of mental health on patient-reported outcomes in cervical radiculopathy or myelopathy surgery. J Clin Neurosci. 2018 Jun 12. pii: S0967-5868(17)32000-3. doi: 10.1016/j.jocn.2018.06.014. [Epub ahead of print].
  146. Daniels AH, DePasse JM, Durand W, Hamilton DK, Passias P, Kim HJ, Protopsaltis T, Reid DBC, LaFage V, Smith JS, Shaffrey C, Gupta M, Klineberg E, Schwab F, Burton D, Bess S, Ames C, Hart Issg RA. Rod Fracture Following Apparently Solid Radiographic Fusion in Adult Spinal Deformity Patients. World Neurosurg. 2018 Jun 18. pii: S1878-8750(18)31286-5. doi: 10.1016/j.wneu.2018.06.071. [Epub ahead of print].
  147. Bono OJ, Poorman GW, Foster N, Jalai CM, Horn SR, Oren J, Soroceanu A, Ramachandran S, Purvis TE, Jain D, Vira S, Diebo BG, Line B, Sciubba DM, Protopsaltis TS, Buckland AJ, Errico TJ, Lafage V, Bess S, Passias PG. Body mass index predicts risk of complications in lumbar spine surgery based on surgical invasiveness. Spine J. 2018 Jul;18(7):1204-1210. doi: 10.1016/j.spinee.2017.11.015. Epub 2017 Nov 16.
  148. Protopsaltis TS, Ramchandran S, Hamilton DK, Sciubba D, Passias PG, Lafage V, Lafage R, Smith JS, Hart RA, Gupta M, Burton D, Bess S, Shaffrey C, Ames CP; International Spine Study Group (ISSG). Analysis of Successful Versus Failed Radiographic Outcomes After Cervical Deformity Surgery. Spine (Phila Pa 1976). 2018 Jul 1;43(13):E773-E781. doi: 10.1097/BRS.0000000000002524.
  149. Horn SR, Dhillon ES, Poorman GW, Tishelman JC, Segreto FA, Bortz CA, Moon JY, Behery O, Shepard N, Diebo BG, Vira S, Passias PG. Epidemiology and national trends in prevalence and surgical management of metastatic spinal disease. J Clin Neurosci. 2018 Jul;53:183-187. doi: 10.1016/j.jocn.2018.04.022. Epub 2018 Apr 19.
  150. De la Garza-Ramos R, Goodwin CR, Abu-Bonsrah N, Jain A, Passias PG, Neuman BJ, Sciubba DM. Predictive Factors for Percutaneous Endoscopic Gastrostomy Tube Placement After Anterior Cervical Fusion. Global Spine J. 2018 May;8(3):260-265. doi: 10.1177/2192568217713010. Epub 2017 Dec 18. PMID:29796374
  151. Ramchandran S, Day LM, Line B, Buckland AJ, Passias PG, Protopsaltis T, Bendo J, Huncke T, Errico TJ, Bess S. The Impact of Different Intraoperative Fluid Administration Strategies on Postoperative Extubation Following Multilevel Thoracic and Lumbar Spine Surgery: A Propensity Score Matched Analysis. Neurosurgery. 2018 May 30. doi: 10.1093/neuros/nyy226. [Epub ahead of print]. PMID:29850844
  152. Diebo BG, Shah NV, Solow M, Challier V, Paulino CB, Passias PG, Lafage R, Schwab FJ, Kim HJ, Lafage V. Adult cervical deformity: radiographic and osteotomy classifications. Orthopade. 2018 Jun 7. doi: 10.1007/s00132-018-3581-0. [Epub ahead of print] Review. PMID: 29881915.
  153. Diebo BG, Tishelman JC, Horn S, Poorman GW, Jalai C, Segreto FA, Bortz CA, Gerling MC, Lafage V, White AP, Mok JM, Cha TD, Eastlack RK, Radcliff KE, Paulino CB, Passias PG. The impact of mental health on patient-reported outcomes in cervical radiculopathy or myelopathy surgery. J Clin Neurosci. 2018 Jun 12. pii: S0967-5868(17)32000-3. doi: 10.1016/j.jocn.2018.06.014. [Epub ahead of print] PMID: 29907392.
  154. Daniels AH, DePasse JM, Durand W, Hamilton DK, Passias P, Kim HJ, Protopsaltis T, Reid DBC, LaFage V, Smith JS, Shaffrey C, Gupta M, Klineberg E, Schwab F, Burton D, Bess S, Ames C, Hart RA; International Spine Study Group. Rod Fracture After Apparently Solid Radiographic Fusion in Adult Spinal Deformity Patients. World Neurosurg. 2018 Jun 19. pii: S1878-8750(18)31286-5. doi: 10.1016/j.wneu.2018.06.071. [Epub ahead of print] PMID: 29929025
  155. Passias PG, Poorman GW, Vasquez-Montes D, Wang C, Jalai C, Horn SR, Steinmetz LM, Bortz CA, Segreto FA, Moon J, Zhou PL, Diebo BG, Vira S. Cluster analysis describes constellations of cardiac anomalies presenting in spinal anomaly patients. Acta Neurochir (Wien). 2018 Jun 28. doi: 10.1007/s00701-018-3596-7. [Epub ahead of print] PMID: 29956035.
  156. Passias PG, Bortz CA, Segreto FA, Horn SR, Lafage R, Lafage V, Smith JS, Line B, Kim HJ, Eastlack R, Hamilton DK, Protopsaltis T, Hostin RA Jr, Klineberg EO, Burton DC, Hart RA, Schwab FJ, Bess S, Shaffrey CI, Ames CP; International Spine Study Group. Development of a Modified Cervical Deformity Frailty Index: A Streamlined Clinical Tool for Preoperative Risk Stratification. Spine (Phila Pa 1976). 2018 Jul 12. doi: 10.1097. BRS.0000000000002778. [Epub ahead of print] PMID: 30005037.
  157. Passias PG, Horn SR, Poorman GW, Daniels AH, Hamilton DK, Kim HJ, Diebo BG, Steinmetz L, Bortz CA, Segreto FA, Sciubba DM, Smith JS, Neuman BJ, Shaffrey CI, Lafage R, Lafage V, Ames C, Hart R, Mundis G, Eastlack RK, Schwab FJ; International Spine Study Group (ISSG). Clinical and radiographic presentation and treatment of patients with cervical deformity secondary to thoracolumbar proximal junctional kyphosis are distinct despite achieving similar outcomes: Analysis of 123 prospective CD cases. J Clin Neurosci. 2018 Jul 2. pii: S0967-5868(18)30583-6. doi: 10.1016/j.jocn.2018.06.040. [Epub ahead of print] PMID: 30042069.
  158. Verma R, Lafage R, Scheer J, Smith J, Passias PG, Hostin R, Ames C, Mundis G, Burton D, Kim HJ, Bess S, Kleinberg E, Schwab F, Lafage V; and the International Spine Study Group. Improvement in Back and Leg Pain and Disability Following Adult Spinal Deformity Surgery: Study of 324 Patients With 2-year Follow-up and the Impact of Surgery on Patient-reported Outcomes. Spine (Phila Pa 1976). 2018 Jul 31. doi: 10.1097/BRS.0000000000002815. [Epub ahead of print] PMID:30067577.
  159. Poorman GW, Zhou PL, Vasquez-Montes D, Horn S, Bortz C, Segreto F, Auerbach J, Moon JY, Tishelman JC, Gerling MC, Diebo BG, De La Garza-Ramos R, Paul JC, Passias PG. Differences in primary and revision deformity surgeries: following 1,063 primary thoracolumbar adult spinal deformity fusions over time. J Spine Surg. 2018 Jun;4(2):203-210. doi: 10.21037/jss.2018.05.06. PMID:30069508.
  160. Passias PG, Horn SR, Oh C, Ramchandran S, Burton DC, Lafage V, Lafage R, Poorman GW, Steinmetz L, Segreto FA, Bortz CA, Smith JS, Ames C, Shaffrey CI, Kim HJ, Soroceanu A, Klineberg EO; International Spine Study Group (ISSG). Evaluating cervical deformity corrective surgery outcomes at 1-year using current patient-derived and functional measures: are they adequate? J Spine Surg. 2018 Jun;4(2):295-303. doi: 10.21037/jss.2018.05.29. PMID:30069521.
  161. Asemota AO, Ahmed AK, Purvis TE, Passias PG, Goodwin CR, Sciubba DM. Analysis of cervical spine injuries in the elderly from 2001-2010 using a nationwide database: increasing incidence, overall mortality and inpatient hospital charges. World Neurosurg. 2018 Aug 2. pii: S1878-8750(18)31708-X. doi: 10.1016/j.wneu.2018.07.228. [Epub ahead of print] PMID:30077751.
  162. Protopsaltis TS, Diebo BG, Lafage R, Henry JK, Smith JS, Scheer JK, Sciubba DM, Passias PG, Kim HJ, Hamilton DK, Soroceanu A, Klineberg EO, Ames CP, Shaffrey CI, Bess S, Hart RA, Schwab FJ, Lafage V; and International Spine Study Group. Identifying Thoracic Compensation and Predicting Reciprocal Thoracic Kyphosis and PJK in Adult Spinal Deformity Surgery. Spine (Phila Pa 1976). 2018 Aug 9. doi: 10.1097/BRS.0000000000002843. [Epub ahead of print] PMID:30096125.
  163. Zhou PL, Moon JY, Tishelman JC, Errico TJ, Protopsaltis TS, Passias PG, Buckland AJ. Spine Deform. Interpretation of Spinal Radiographic Parameters in Patients With Transitional Lumbosacral Vertebrae. 2018 Sep - Oct;6(5):587-592. doi: 10.1016/j.jspd.2018.01.004. PMID:30122395.
  164. Horn SR, Segreto FA, Ramchandran S, Poorman GR, Sure A, Marascalachi B, Bortz CA, Varlotta CG, Tishelman J, Vasquez-Montes D, Ihejirika Y, Zhou P, Moon J, Lafage R, Diebo BG, Vira S, Jalai CM, Wang C, Shenoy K, Errico T, Lafage V, Buckland A, Passias PG. The Influence of BMI on Achieving Age Adjusted Alignment Goals in Adult Spinal Deformity Corrective Surgery with Full Body Analysis at 1 Year. World Neurosurg. 2018 Aug 27. pii: S1878-8750(18)31906-5. doi: 10.1016/j.wneu.2018.08.123. [Epub ahead of print] PMID:30165222.
  165. Segreto FA, Vasquez-Montes D, Brown AE, Bortz C, Horn SR, Diebo BG, Zhou PL, Vira S, Baker JF, Petrizzo AM, Lafage R, Lafage V, Errico TJ, Passias PG. Incidence, trends, and associated risks of developmental hip dysplasia in patients with Early Onset and Adolescent Idiopathic Scoliosis. J Orthop. 2018 Aug 15;15(3):874-877. doi: 10.1016/j.jor.2018.08.015. eCollection 2018 Sep. PMID: 30166802.
  166. Iyer S, Kim HJ, Bao H, Smith JS, Gupta M, Albert TJ, Protopsaltis TS, Mundis GM, Passias PG, Neuman BJ, Klineberg EO, Lafage V, Ames CP. The Posterior Use of BMP-2 in Cervical Deformity Surgery Does Not Result in Increased Early Complications: A Prospective Multicenter Study. Global Spine J. 2018 Sep;8(6):622-628. doi: 10.1177/2192568218760538. Epub 2018 Mar 26. PMID:30202717.
  167. Segreto FA, Lafage V, Lafage R, Smith JS, Line BG, Eastlack RK, Scheer JK, Chou D, Frangella NJ, Horn SR, Bortz CA, Diebo BG, Neuman BJ, Protopsaltis TS, Kim HJ, Klineberg EO, Burton DC, Hart RA, Schwab FJ, Bess S, Shaffrey CI, Ames CP, Passias PG; International Spine Study Group. Recovery Kinetics: Comparison of Patients undergoing Primary or Revision Procedures for Adult Cervical Deformity Using a Novel Area Under the Curve Methodology. Neurosurgery. 2018 Sep 28. doi: 10.1093/neuros/nyy435. [Epub ahead of print] PMID:30272188.
  168. Panchal R, Denhaese R, Hill C, Strenge KB, DE Moura A, Passias PG, Arnold P, Cappuccino A, Dennis MD, Kranenburg A, Ventimiglia B, Martin K, Ferry C, Martineck S, Moore C, Kim K. Anterior and Lateral Lumbar Interbody Fusion With Supplemental Interspinous Process Fixation: Outcomes from a Multicenter, Prospective, Randomized, Controlled Study. Int J Spine Surg. 2018 Aug 3;12(2):172-184. doi: 10.14444/5025. eCollection 2018 Apr. PMID:30276077.
  169.   Gerling MC, Radcliff K, Isaacs R, Bianco K, Jalai CM, Worley NJ, Poorman GW, Horn SR, Bono OJ, Moon J, Arnold PM, Vaccaro AR, Passias PG. Trends in Nonoperative Treatment Modalities Prior to Cervical Surgery and Impact on Patient-Derived Outcomes: Two-Year Analysis of 1522 Patients From the Prospective Spine Treatment Outcome Study. Int J Spine Surg. 2018 Aug 3;12(2):250-259. doi: 10.14444/5031. eCollection 2018 Apr. PMID:30276082.
  170. Poorman GW, Moon JY, Horn SR, Jalai C, Zhou PL, Bono O, Passias PG. Rates of Mortality in Cervical Spine Surgical Procedures and Factors Associated With Its Occurrence Over a 10-Year Period: A Study of 342 477 Patients on the Nationwide Inpatient Sample.Int J Spine Surg. 2018 Aug 3;12(2):276-284. doi: 10.14444/5034. eCollection 2018 Apr. PMID: 30276085.
  171. Passias PG, Horn SR, Jalai CM, Poorman GW, Steinmetz L, Segreto FA, Bortz CA, Diebo BG, Lafage V. Pre-operative planning and rod customization may optimize post-operative alignment and mitigate development of malalignment in multi-segment Posterior cervical decompression and fusion patients. J Clin Neurosci. 2018 Sep 29. pii: S0967-5868(18)30608-8. doi: 10.1016/j.jocn.2018.08.017. [Epub ahead of print] PMID:30279119.
  172. Horn SR, Shepard N, Vasquez-Montes D, Bortz CA, Segreto FA, De La Garza Ramos R, Goodwin CR, Passias PG. Chiari malformation clusters describe differing presence of concurrent anomalies based on Chiari type. J Clin Neurosci. 2018 Sep 29. pii: S0967-5868(18)30544-7. doi: 10.1016/j.jocn.2018.06.045. [Epub ahead of print] PMID:30279122.
  173. Passias PG, Poorman G, Lurie J, Zhao W, Morgan T, Horn S, Bess RS, Lafage V, Gerling M, Errico TJ. Patient Profiling Can Identify Spondylolisthesis Patients at Risk for Conversion from Nonoperative to Operative Treatment. JBJS Open Access. 2018 May 8;3(2):e0051. doi: 10.2106/JBJS.OA.17.00051. eCollection 2018 Jun 28. PMID: 30280136.
  174. Ge DH, Stekas ND, Varlotta CG, Fischer CR, Petrizzo A, Protopsaltis TS, Passias PG, Errico TJ, Buckland AJ. Comparative Analysis of Two Transforaminal Lumbar Interbody Fusion Techniques: Open TLIF Versus Wiltse MIS TLIF. Spine (Phila Pa 1976). 2018 Oct 15. doi: 10.1097/BRS.0000000000002903. [Epub ahead of print] PMID: 30325884.
  175. Poorman GW, Moon JY, Wang C, Horn SR, Beaubrun BM, Bono OJ, Francis AM, Jalai CM, PassiasPG. Rates of Mortality in Lumbar Spine Surgery and Factors Associated With Its Occurrence Over a 10-Year Period: A Study of 803,949 Patients in the Nationwide Inpatient Sample. Int J Spine Surg. 2018 Oct 15;12(5):617-623. doi: 10.14444/5076. eCollection 2018 Oct. PMID:30364742.
  176. Passias PG, Hasan S, Radcliff K, Isaacs R, Bianco K, Jalai CM, Poorman GW, Worley NJ, Horn SR, Boniello A, Zhou PL, Arnold PM, Hsieh P, Vaccaro AR, Gerling MC. Int J Spine Surg. Arm Pain Versus Neck Pain: A Novel Ratio as a Predictor of Post-Operative Clinical Outcomes in Cervical Radiculopathy Patients. 2018 Oct 15;12(5):629-637. doi: 10.14444/5078. eCollection 2018 Oct. PMID:30364823.
  177. Passias PG, Poorman GW, Lafage V, Smith J, Ames C, Schwab F, Shaffrey C, Segreto FA, Horn SR, Bortz CA, Varlotta CG, Hockley A, Wang C, Daniels A, Neuman B, Hart R, Burton D, Javidan Y, Line B, LaFage R, Bess S, Sciubba D; ISSG. Cervical Versus Thoracolumbar Spinal Deformities: A Comparison of Baseline Quality-of-Life Burden. Clin Spine Surg. 2018 Dec;31(10):413-419. doi: 10.1097/BSD.0000000000000743. PMID:30371600.
  178. Passias PG, Segreto FA, Bortz CA, Horn SR, Frangella NJ, Diebo BG, Hockley A, Wang C, Shepard N, Lafage R, Lafage V. Fatty Infiltration of Cervical Spine Extensor Musculature: Is there a Relationship With Cervical Sagittal Balance?  Clin Spine Surg. 2018 Dec;31(10):428-434. doi: 10.1097/BSD.0000000000000742. PMID:30371601.
  179. De la Garza Ramos R, Longo M, Gelfand Y, Echt M, Diebo BG, Shah NV, Kessler RA, Passias PG, Yassari R. Weekend versus Weekday Admission in Spinal Cord Injury and Its Effect on Timing of Surgical Intervention. World Neurosurg. 2018 Nov 1. pii: S1878-8750(18)32431-8. doi: 10.1016/j.wneu.2018.10.133. [Epub ahead of print]. PMID: 30391609.
  180. Passias PG, Horn SR, Vasquez-Montes D, Shepard N, Segreto FA, Bortz CA, Poorman GW, Jalai CM, Wang C, Stekas N, Frangella NJ, Deflorimonte C, Diebo BG, Raad M, Vira S, Horowitz JA, Sciubba DM, Hassanzadeh H, Lafage R, Afthinos J, Lafage V. Prior bariatric surgery lowers complication rates following spine surgery in obese patients. Acta Neurochir (Wien). 2018 Dec;160(12):2459-2465. doi: 10.1007/s00701-018-3722-6. Epub 2018 Nov 8.
  181. Janjua MB, Ozturk A, Piazza M, Passias PG, Arlet V, Welch WC. Technical nuances of percutaneous sacroiliac joint fixation: A cadaveric study. J Clin Neurosci. 2018 Nov 10. pii: S0967-5868(18)31062-2. doi: 10.1016/j.jocn.2018.10.130. [Epub ahead of print].
  182. Passias PG, Bortz CA, Pierce KE, Segreto FA, Horn SR, Vasquez-Montes D, Lafage V, Brown AE, Ihejirika Y, Alas H, Varlotta C, Ge DH, Shepard N, Oh C, DelSole EM, Jankowski PP, Hockley A, Diebo BG, Vira SN, Sciubba DM, Raad M, Neuman BJ, Gerling MC. Decreased rates of 30-day perioperative complications following ASD-corrective surgery: A modified Clavien analysis of 3300 patients from 2010 to 2014. J Clin Neurosci. 2018 Nov 10. pii: S0967-5868(18)31283-9. doi: 10.1016/j.jocn.2018.10.104. [Epub ahead of print].
  183. Bortz CA, Passias PG, Segreto FA, Horn SR, Lafage R, Smith JS, Line BG, Mundis GM Jr, Kelly MP, Park P, Sciubba DM, Hamilton DK, Gum JL, Burton DC, Hart RA, Schwab FJ, Bess S, Shaffrey C, Klineberg EO; International Spine Study Group. Grading of Complications After Cervical Deformity-corrective Surgery: Are Existing Classification Systems Applicable? Clin Spine Surg. 2018 Nov 16. doi: 10.1097/BSD.0000000000000748. [Epub ahead of print].
  184. Scheer JK, Oh T, Smith JS, Shaffrey CI, Daniels AH, Sciubba DM, Hamilton DK, Protopsaltis TS, Passias PG, Hart RA, Burton DC, Bess S, Lafage R, Lafage V, Schwab F, Klineberg EO, Ames CP; International Spine Study Group. Development of a validated computer-based preoperative predictive model for pseudarthrosis with 91% accuracy in 336 adult spinal deformity patients. Neurosurg Focus. 2018 Nov 1;45(5):E11. doi: 10.3171/2018.8.FOCUS18246. PMID:30453452.
  185. Passias PG, Oh C, Horn SR, Kim HJ, Hamilton DK, Sciubba DM, Neuman BJ, Buckland AJ, Poorman GW, Segreto FA, Bortz CA, Brown AE, Protopsaltis TS, Klineberg EO, Ames C, Smith JS, Lafage V; International Spine Study Group. Predicting the occurrence of complications following corrective cervical deformity surgery: Analysis of a prospective multicenter database using predictive analytics. J Clin Neurosci. 2019 Jan;59:155-161. doi: 10.1016/j.jocn.2018.10.111. Epub 2018 Nov 17. PMID:30459012.
  186. Passias PG, Bono OJ, Bono JV. Total Knee Arthroplasty in Patients of Advanced Age: A Look at Outcomes and Complications. J Knee Surg. 2018 Nov 26. doi: 10.1055/s-0038-1676067. [Epub ahead of print] PMID:30477044.
  187. Kuprys TK, Steinmetz LM, Fischer CR, Protopsaltis TS, Passias PG, Goldstein JA, Bendo JA, Errico TJ, Buckland AJ. Pre-operative Assessment of Bone Quality in Spine Deformity Surgery: Correlation with Clinical Practice and Published Recommendations.  Spine (Phila Pa 1976). 2018 Dec 11. doi: 10.1097/BRS.0000000000002956. [Epub ahead of print] PMID:30540720.
  188. Horn SR, Poorman GW, Tishelman JC, Bortz CA, Segreto FA, Moon JY, Zhou PL, Vaynrub M, Vasquez-Montes D, Beaubrun BM, Diebo BG, Vira S, Raad M, Sciubba DM, Lafage V, Schwab FJ, Errico TJ, Passias PG. Trends in Treatment of Scheuermann Kyphosis: A Study of 1,070 Cases From 2003 to 2012. Horn Spine Deform. 2019 Jan;7(1):100-106. doi: 10.1016/j.jspd.2018.06.004. PMID:30587300.
  189. Segreto FA, Beyer GA, Grieco P, Horn SR, Bortz CA, Jalai CM, Passias PG, Paulino CB, Diebo BG. Vertebral Osteomyelitis: A Comparison of Associated Outcomes in Early Versus Delayed Surgical Treatment. Int J Spine Surg. 2018 Dec 21;12(6):703-712. doi: 10.14444/5088. eCollection 2018 Dec. PMID:30619674.
  190. Passias PG, Jalai CM, Worley N, Vira S, Scheer JK, Smith JS, Ramachandran S, Soroceanu A, Horn SR, Poorman GW, Protopsaltis TS, Klineberg EO, Sciubba DM, Kim HJ, Hamilton DK, Lafage R, Lafage V, Ames CP; (ISSG). Development of New-Onset Cervical Deformity in Nonoperative Adult Spinal Deformity Patients With 2-Year Follow-Up. Int J Spine Surg. 2018 Dec 21;12(6):725-734. doi: 10.14444/5091. eCollection 2018 Dec. PMID:30619677.
  191. Segreto FA, Vasquez-Montes D, Bortz CA, Horn SR, Diebo BG, Vira S, Kelly JJ, Stekas N, Ge DH, Ihejirika YU, Lafage R, Lafage V, Karamitopoulos M, Delsole EM, Hockley A, Petrizzo AM, Buckland AJ, Errico TJ, Gerling MC, Passias PG. Impact of presenting patient characteristics on surgical complications and morbidity in early onset scoliosis. J Clin Neurosci. 2019 Jan 8. pii: S0967-5868(18)31340-7. doi: 10.1016/j.jocn.2018.12.007. [Epub ahead of print]. PMID:30635164.
  192. Oren JH, Tishelman JC, Day LM, Baker JF, Foster N, Ramchandran S, Jalai C, Poorman G, Cassilly R, Buckland A, Passias PG, Bess S, Errico TJ, Protopsaltis TS. Spine Deform. Measurement of Spinopelvic Angles on Prone Intraoperative Long-Cassette Lateral Radiographs Predicts Postoperative Standing Global Alignment in Adult Spinal Deformity Surgery. 2019 Mar;7(2):325-330. doi: 10.1016/j.jspd.2018.07.007. PMID:30660229.
  193. Impact of Obesity on Radiographic Alignment and Short-term complications after Surgical Treatment of Adult Cervical Deformity. Passias PG, Poorman GW, Horn SR, Jalai CM, Bortz C, Segreto F, Diebo BM, Daniels A, Hamilton DK, Sciubba D, Smith J, Neuman B, Shaffrey CI, LaFage V, LaFage R, Schwab F, Bess S, Ames C, Hart R, Soroceanu A, Mundis G, Eastlack R; International Spine Study Group. World Neurosurg. 2019 Feb 18. pii: S1878-8750(19)30364-X. doi: 10.1016/j.wneu.2019.01.248. [Epub ahead of print] No abstract available. 
  194. Cost-utility of revisions for cervical deformity correction warrants minimization of reoperations. Horn SR, Passias PG, Hockley A, Lafage R, Lafage V, Hassanzadeh H, Horowitz JA, Bortz CA, Segreto FA, Brown AE, Smith JS, Sciubba DM, Mundis GM, Kelley MP, Daniels AH, Burton DC, Hart RA, Schwab FJ, Bess S, Shaffrey CI, Hostin RA, Ames CP; International Spine Study Group. J Spine Surg. 2018 Dec;4(4):702-711. doi: 10.21037/jss.2018.10.02.
  195. Baseline mental status predicts happy patients after operative or non-operative treatment of adult spinal deformity. Diebo BG, Segreto FA, Jalai CM, Vasquez-Montes D, Bortz CA, Horn SR, Frangella NJ, Egers MI, Klineberg E, Lafage R, Lafage V, Schwab F, Passias PG; International Spine Study Group. J Spine Surg. 2018 Dec;4(4):687-695. doi: 10.21037/jss.2018.09.11.
  196. Alcoholism as a predictor for pseudarthrosis in primary spine fusion: An analysis of risk factors and 30-day outcomes for 52,402 patients from 2005 to 2013. Passias PG, Bortz C, Alas H, Segreto FA, Horn SR, Ihejirika YU, Vasquez-Montes D, Pierce KE, Brown AE, Shenoy K, DelSole EM, Johnson B, Oh C, Zhou PL, Deflorimonte C, Dhillon ES, Jankowski PP, Diebo BG, Lafage V, Lafage R, Vira SN, Bendo JA, Goldstein JA, Schwab FJ, Gerling MC. J Orthop. 2018 Dec 20;16(1):36-40. doi: 10.1016/j.jor.2018.12.011. eCollection 2019 Jan-Feb.

Posters, E-Posters, Abstracts

  1. E-Poster #1: Passias PG, Poorman, GW, Jalai CM. Cardiopulmonary complications in elective spine surgery. Lumbar Spine Research Society Annual Meeting, Chicago, IL, US. 2016.
  2. Poster Presentation #2: Passias PG, Poorman, GW, Jalai CM. The threshold of obesity as a comorbidity in the lumbar spine. Lumbar Spine Research Society Annual Meeting, Chicago, IL, US. 2016.
  3. Podium Presentation #16: Jalai CM, Passias PG, Poorman GW, Smith JS, Scheer JK, Sciubba D, Klineberg EO, Lafage V, Shaffrey CI, Ames CP, Miller E (USA). Comparative analysis of intra-operative complications between a multicenter prospective cervical deformity database versus a nationwide sample. 32nd European Cervical Spine Research Society Annual Meeting, Prague, Czech 2016.
  4. Poster #24: Passias PG, Jalai CM, Kim HJ, Smith JS, Ames CP, Hamilton DK, Burton DC, Bess RS, Lafage V, Schwab FJ, Miller EK. Adult spinal deformity patients with proximal junctional kyphosis compensate with distinct cervical malalignment characteristics relative to those unaffected (ID 127). 32nd European Cervical Spine Research Society Annual Meeting, Prague, Czech 2016.
  5. Poster #31: Passias PG, Jalai CM, Smith JS, Poorman GW, Protopsaltis TS, Sciubba DM, Lafage R, Lafage V, Ames CP, Shaffrey CI, Miller EK. Does myelopathy or alignment improvement drive acute post-operative outcomes in cervical deformity patients? (ID 122). 32nd European Cervical Spine Research Society Annual Meeting, Prague, Czech 2016.
  6. Poster #36: Peter G Passias, Cheongeun Oh, Cyrus M Jalai, Gregory W Poorman, Renaud Lafage, Bassel G Diebo, Justin S Smith, Han Jo Kim, Virginie Lafage, Christopher P Ames, Emily K Miller. Predictive model for patient-reported outcomes scores following cervical spine deformity surgical correction (ID 124). 32nd European Cervical Spine Research Society Annual Meeting, Prague, Czech 2016.
  7. Poster #48: Peter G Passias, Cyrus M Jalai, Virginie Lafage, Renaud Lafage, Themistocles Protopsaltis, Alexandra Soroceanu, Justin S Smith, Frank Schwab, Christopher Shaffrey, Christopher P Ames, Emily K Miller. Primary drivers of cervical deformity: prevalence and effect of surgical treatment strategies on post-operative alignment (ID: 125). 32nd European Cervical Spine Research Society Annual Meeting, Prague, Czech 2016.
  8. E-Poster #4: Peter G Passias, Cyrus M Jalai, Justin S Smith, Virginie Lafage, Bassel G Diebo, Themistocles Protopsaltis, Gregory W Poorman, Shay Bess, Christopher Shaffrey, Christopher P Ames, Emily K Miller. Characterizing cervical spine deformity based on existing cervical and adult deformity classification schemes at presentation and following treatment (ID 121).  32nd European Cervical Spine Research Society Annual Meeting, Prague, Czech 2016.
  9. Paper #7: Primary vs Revision Adult Cervical Deformity: A Prospective Multicenter Study with 1-Year Follow-up. Alex Soroceanu, MD, MPH, FRCSC; Justin S. Smith, MD, PhD; Munish Chandra Gupta, MD; Peter G. Passias, Themistocles S. Protopsaltis, Robert A. Hart, Virginie Lafage, Douglas C. Burton, Justin K. Scheer, Frank J. Schwab, Thomas J. Errico, Christopher I. Shaffrey, Christopher P. Ames, International Spine Study Group. Annual Meeting International Meeting for Advancement of Spinal Surgery, Washington, D.C., USA 2016.
  10. Paper #17: The Posterior use of BMP-2 in Cervical Deformity Surgery Does Not Result in Increased Complications: A Prospective Multicenter Study. Han Jo Kim, Hongda Bao, MD, Sravisht Iyer, Justin S. Smith, Munish Chandra Gupta, Todd J. Albert, Themistocles S. Protopsaltis, Gregory M. Mundis, Jr., Peter G. Passias, Brian James Neuman, Eric O. Klineberg, Virginie Lafage, Christopher P. Ames, International Spine Study Group. Annual Meeting International Meeting for Advancement of Spinal Surgery, Washington, D.C., USA 2016.
  11. Paper #20: National Administrative Databases in Adult Spinal Deformity Surgery: A Cautionary Tale. Aaron James Buckland, Gregory Wyatt Poorman, Cyrus M. Jalai, Eric O. Klineberg, Michael P. Kelly, Peter G. Passias, International Spine Study Group. Annual Meeting International Meeting for Advancement of Spinal Surgery, Washington, D.C., USA 2016.
  12. Paper #39: The Impact of Obesity on Compensatory Mechanisms in Response to Progressive Sagittal Malalignment. Cyrus M. Jalai, Bassel G. Diebo, Dana Leslie Cruz, Gregory Wyatt Poorman, Shaleen Vira, Aaron James Buckland, Renaud Lafage, Shay Bess, Frank J. Schwab, Thomas J. Errico, Virginie Lafage, Peter G. Passias. Annual Meeting International Meeting for Advancement of Spinal Surgery, Washington, D.C., USA 2016.
  13. Paper #64: Medical Complications in 3,519 Surgically Treated Elderly Patients with Adult Spinal Deformity: Comparison of Multicenter Surgeon Maintained vs. Medicare Claims Database
  14. Amit Jain, Hamid Hassanzadeh, Varun Puvanesarajah; Eric O. Klineberg, Michael P. Kelly, D.Kojo Hamilton, Virginie Lafage, Aaron James Buckland, Peter G. Passias, Themistocles S. Protopsaltis, Renaud Lafage, Justin S. Smith, MD, Christopher I. Shaffrey, Khaled M. Kebaish, International Spine Study Group. Annual Meeting International Meeting for Advancement of Spinal Surgery, Washington, D.C., USA 2016.
  15. Paper #65: Morbidity of Adult Spinal Deformity Surgery in Elderly Has Declined Over Time
  16. Peter G. Passias, MD; Gregory Wyatt Poorman, BA; Cyrus M. Jalai, Brian James Neuman, Rafael De la Garza-Ramos, Emily Kristine Miller, Amit Jain, Daniel M. Sciubba, Virginie Lafage. Annual Meeting International Meeting for Advancement of Spinal Surgery, Washington, D.C., USA 2016.
  17. Paper #68: Psychological Burden of Spinal Deformity: A Comparative Analysis with Three Disabling Chronic Diseases. Bassel G. Diebo, Cyrus M. Jalai, Gregory Wyatt Poorman, Thomas J. Errico, Virginie Lafage, Peter G. Passias. Annual Meeting International Meeting for Advancement of Spinal Surgery, Washington, D.C., USA 2016.
  18. Paper #90: Does Pelvic Incidence Increase with Age? An Analysis of 1625 Adults Hongda Bao, Barthelemy Liabaud, Jeffrey J. Varghese, Renaud Lafage, Bassel G. Diebo, Cyrus M. Jalai, Subaraman Ramchandran, Gregory Wyatt Poorman, Dana Leslie Cruz, Thomas J. Errico, Themistocles S. Protopsaltis, Peter G. Passias, Aaron James Buckland. Frank J. Schwab, Virginie Lafage. Annual Meeting International Meeting for Advancement of Spinal Surgery, Washington, D.C., USA 2016.
  19. Paper #102: Upper Cervical and Infra-cervical Compensation in Cervical Deformity Patients
  20. Subaraman Ramchandran, Themistocles S. Protopsaltis, Daniel M. Sciubba, Justin K. Scheer, Alan H. Daniels, Peter G. Passias, Virginie Lafage, Han Jo Kim, Gregory M. Mundis, Jr., Eric O. Klineberg, Robert A. Hart, Justin S. Smith, Christopher I. Shaffrey, Christopher P. Ames, International Spine Study Group. Annual Meeting International Meeting for Advancement of Spinal Surgery, Washington, D.C., USA 2016.
  21. Paper #109: Three-column Osteotomy for Correction of Cervical Deformity: Alignment Changes and Early Complications in a Multicenter Prospective Series of 24 Patients Justin S. Smith, Christopher I. Shaffrey, Han Jo Kim, Brian James Neuman, Eric O. Klineberg, Frank J. Schwab, Renaud Lafage, Themistocles S. Protopsaltis, Peter G. Passias, Gregory M. Mundis, Jr., Robert A. Hart, Vedat Deviren, Shay Bess, Christopher P. Ames, International Spine Study Group. Annual Meeting International Meeting for Advancement of Spinal Surgery, Washington, D.C., USA 2016.
  22. Paper #120: The Health Impact of Symptomatic Adult Cervical Deformity: Comparison to United States Population Norms and Chronic Disease States Based on the EQ5D. Smith JS, Line B, Bess RS, Shaffrey CI, Kim HJ, Mundis, Jr. GM, Klineberg EO, Schwab FJ, Lafage V, Passias PG, Protopsaltis TS, Hart RA, Burton DC, Ames CP, International Spine Study Group. Annual Meeting International Meeting for Advancement of Spinal Surgery, Washington, D.C., USA 2016.
  23. Paper #122: Analysis of Lumbar Flexibility on Supine MRI and CT May Reduce the Need for More Invasive Spinal Osteotomy in Adult Spinal Deformity Surgery Baker J, Day LM, Oren JH, Moses MJ, Buckland AJ, Passias PG, Lafage V, Schwab FJ, Bess RS, Errico TJ, Protopsaltis TS. Annual Meeting International Meeting for Advancement of Spinal Surgery, Washington, D.C., USA 2016.
  24. Paper #137: Primary Drivers of Cervical Deformity: Prevalence and Effect of Surgical Treatment Strategies on Post-Operative Alignment. Passias PG, Jalai CM, Lafage V, Lafage R, Protopsaltis TS, Ramchandran S, Gupta MC, Hart RA, Deviren V, Soroceanu A, Smith JS, Schwab FJ, Shaffrey CI, Ames CP, International Spine Study Group. Annual Meeting International Meeting for Advancement of Spinal Surgery, Washington, D.C., USA 2016.
  25. Paper #138: Predictive Model for Patient-reported Outcomes Scores Following Cervical Spine Deformity Surgical Correction. Passias PG, Oh C, Jalai CM, Poorman GW, Lafage R, Diebo B, Scheer JK, Smith JS, Shaffrey CI, Protopsaltis, Kim HJ, Hart RA, Lafage V, Ames CP, International Spine Study Group. Annual Meeting International Meeting for Advancement of Spinal Surgery, Washington, D.C., USA 2016.
  26. Paper #139: Cervical Deformity Surgery Does Not Result in Post-operative Dysphagia: A Prospective Cohort Study. Kim HJ, Bao H, Iyer S, Smith JS, Kelly MP, Gupta MC, Albert TJ, Mundis, Jr. GM, Passias PG, Neuman B, Klineberg EO, Lafage V, Ames CP, International Spine Study Group. Annual Meeting International Meeting for Advancement of Spinal Surgery, Washington, D.C., USA 2016.
  27. Paper #143: Bimodal Incidence and Causes of Proximal Junctional Kyphosis (PJK) in Adult Spinal Deformity (ASD). Gupta MC, Bassel G. Diebo, Protopsaltis TS, Hart RA, Smith JS, Ames CP, Lafage R, Scheer JK, Kim HJ, Bess S, Burton DC, Passias PG, Schwab FJ, Lafage V, International Spine Study Group. Annual Meeting International Meeting for Advancement of Spinal Surgery, Washington, D.C., USA 2016.
  28. Paper #145: Proximal Junctional Kyphosis (PJK) Can Be Predicted Following Adult Spinal Deformity (ASD) Surgery: Models Based On Regional Alignment Changes Within the Fusion Area. Liabaud B, Lafage R, Hart RA, Schwab FJ, Smith JS, Kim HJ, Hostin R, Passias PG, Ames CP, Mundis, Jr. GM, Burton DC, Bess S, Klineberg EO, Lafage V, International Spine Study Group. Annual Meeting International Meeting for Advancement of Spinal Surgery, Washington, D.C., USA 2016.
  29. E-Poster #201: Congenital vs. idiopathic scoliosis: Comparison of in- hospital Co-morbidities using nationwide inpatient Data- base (KiD). Poorman GW, Jalai CM, Diebo BG, Vira S, Baker J, Shenoy K, Hasan S, Buza J,  Bronson W, Paul J, Kaye D, Atanda A, Lafage V, Errico T, Passias PG. Scoliosis Research Society Annual Meeting, Prague, Czech Republic, 2016.
  30. E-Poster #202: incidence of Congenital Spinal abnormalities among Paediatric Patients and their association with Scoliosis and Systemic anomalies. Passias PG, Gregory Wyatt Poorman GW, Jalai CM, Diebo BG, Vira S, Baker J, Shenoy K, Hasan S, Buza JA, Bronson W, Paul JC, Kaye D; Atanda A, Lafage V, Errico TJ. Scoliosis Research Society Annual Meeting, Prague, Czech Republic, 2016.
  31. E-Poster #204: Analysis of Successful vs. Failed radiographic out- comes following Cervical Deformity Surgery. Protopsaltis TS, Ramchandran S, Hamilton DK, Sciubba DM, Passias PG, Lafage V, Lafage R, Smith JS, Hart RA, Gupta MC, Burton DC, Bess RS, Shaffrey CI, Ames CI, International Spine Study Group. Scoliosis Research Society Annual Meeting, Prague, Czech Republic, 2016.
  32. E-Poster #207: Bi-modal incidence and causes of proximal junctional kyphosis (PJK) in adult spinal deformity (aSD). Gupta MC, Diebo BG, Protopsaltis TS, Hart RA Smith JS, Ames CP, Lafage R, Scheer JK, Kim HJ, Bess RS, Burton DC, Passias PG, Schwab FJ, Lafage V, International Spine Study Group. Scoliosis Research Society Annual Meeting, Prague, Czech Republic, 2016.
  33. E-Poster #216: Proximal Junctional Kyphosis (PJK) Can be Predicted Following adult Spinal Deformity (aSD) Surgery: models based on regional alignment Changes Within the Fusion area. Liabaud B, Lafage R, Hart R, Schwab FJ, Smith JS, Kim HJ, Hostin RJ, Passias PG, Ames CP, Mundis Jr. GM, Burton DC, Bess RS, Klineberg EO, Lafage V, International Spine Study Group. Scoliosis Research Society Annual Meeting, Prague, Czech Republic, 2016.
  34. E-Poster #218: Upper Cervical and infra-cervical Compensation in Cervical Deformity Patients. Ramchandran S, Protopsaltis TS, Sciubba DM, Scheer JK, Daniels AH, Passias PG, Lafage V, Kim HJ, Mundis Jr. GM, Klineberg EO, Hart RA, Smith JS, Shaffrey CI, Ames CP International Spine Study Group. Scoliosis Research Society Annual Meeting, Prague, Czech Republic, 2016.
  35. E-Poster #224. Comparative analysis of Peri-operative outcomes us- ing nationally Derived hospital Discharge Data relative to a Prospective multi-center Surgical Database of adult Spinal Deformity Surgery. Poorman GW, Passias PG, Buckland AJ, Jalai CM, Kelly MP, Sciubba DM, Neuman BJ Hamilton DK, Jain A, Lafage V, Bess RS Klineberg EO, International Spine Study Group. Scoliosis Research Society Annual Meeting, Prague, Czech Republic, 2016.
  36. E-Poster #226: Life is a lordosing event in the Subaxial Cervical Spine: an analysis of upper and lower Cervical regions based on age and thoracolumbar Sagittal malalignment. Henry JK, Lafage R, Liabaud B, Protopsaltis TS, Passias PG, Buckland AJ, Errico TJ, Bao H, Ramchandran S, Day LM, Jalai CM, Poorman GW, Cruz DL, Schwab FJ, Lafage V. Scoliosis Research Society Annual Meeting, Prague, Czech Republic, 2016.
  37. E-Poster #227: Characterizing Cervical Spine Deformity based on existing Cervical and adult Deformity Classification Schemes at Presentation and Following treatment. Passias PG, Jalai CM, Smith JS, Lafage V, Diebo BG, Protopsaltis TS, Poorman GW, Bess RS, Shaffrey CI, Ames CP, Schwab FJ, International Spine Study Group. Scoliosis Research Society Annual Meeting, Prague, Czech Republic, 2016.
  38. E-Poster #238: The impact of obesity on Compensatory mechanisms in response to Progressive Sagittal malalignment. Jalai CM, Diebo BG, Cruz DL, Poorman GW, Vira S, Buckland AJ, Lafage R, Bess RS, Schwab FJ, Errico TJ, Lafage V, Passias PG. Scoliosis Research Society Annual Meeting, Prague, Czech Republic, 2016.
  39. E-Poster #272: Predictive model for Patient-reported outcomes Scores Following Cervical Spine Deformity Surgical Correction. Passias PG, Oh C, Jalai CM, Poorman GW, Lafage R, Diebo BG, Scheer JK, Smith JS, Shaffrey CI, Protopsaltis TS, Kim HJ, Hart RA, Lafage V, Ames CP, International Spine Study Group.  Scoliosis Research Society Annual Meeting, Prague, Czech Republic, 2016.
  40. E-Poster #277: Three-column osteotomy for Correction of Cervical Deformity: alignment Changes and early Complications in a multicenter Prospective Series of 24 Patients. Smith JS, Shaffrey CI, Kim HJ, Neuman BJ, Klineberg EO, Schwab FJ, Lafage R, Protopsaltis TS, Passias PG, Mundis Jr. GM, Hart RA, Deviren V, Bess RS, Ames CP, International Spine Study Group.  Scoliosis Research Society Annual Meeting, Prague, Czech Republic, 2016.
  41. E-Poster #281: Medical Complications in 3,519 Surgically treated elderly Patients with adult Spinal Deformity: Comparison of multicenter Surgeon maintained vs. medicare Claims Database. Jain A, Hassanzadeh H, Puvanesarajah H, Klineberg EO, Kelly MP, Hamilton DK, Lafage V, Buckland AJ, Passias PG, Protopsaltis TS, Lafage R, Smith JS, Shaffrey CI, Kebaish KM. International Spine Study Group. Scoliosis Research Society Annual Meeting, Prague, Czech Republic, 2016.
  42. E-POSTER #288: The health impact of Symptomatic adult Cervical De- formity: Comparison to united States Population norms and Chronic Disease States based on the eQ5D. Smith JS, Line B, Bess RS, Shaffrey CI, Kim HJ, Mundis GM, Klineberg EO, Schwab FJ, Lafage V, Passias PG, Protopsaltis TS, Hart RA, Burton DC, Ames CP, International Spine Study Group. Scoliosis Research Society Annual Meeting, Prague, Czech Republic, 2016.
  43. E-Poster #294: The Posterior use of bmP-2 in Cervical Deformity sur- gery does not result in increased Complications: a prospec- tive multicenter study. Kim HJ, Sravisht-Iyer BH, Smith JS, Gupta MC, Albert T, Protopsaltis TS, Mundis Jr. GM, Passias PG, Neuman BJ, Klineberg EO, Lafage V, Ames CP, International Spine Study Group.  Scoliosis Research Society Annual Meeting, Prague, Czech Republic, 2016.
  44. E-Poster #299: National administrative Databases in adult Spinal Deformity Surgery – a Cautionary tale. Buckland AJ, Poorman GW, Jalai CM, Klineberg EO, Kelly MP, Passias PG, International Spine Study Group.  Scoliosis Research Society Annual Meeting, Prague, Czech Republic, 2016.
  45. E-Poster #300: Analysis of lumbar Flexibility on Supine mri and Ct may reduce the need for more invasive Spinal osteotomy in adult Spinal Deformity Surgery. Baker J, Day LM, Oren JH, Moses MJ, Buckland AJ, Passias PG, Lafage V, Schwab FJ, Bess RS, Errico TJ, Protopsaltis TS.  Scoliosis Research Society Annual Meeting, Prague, Czech Republic, 2016.
  46. Poster #33: The Fate of Adult Spinal Deformity Patients Incurring Rod Fracture after Thoracolumbar Fusion without Prior Three-Column Osteotomy. Hamilton DK, Buza J, Passias PG, Jalai CM, Kim HJ, Hart R, Ailon T, Gupta M, Ames CP, Deviren V, Daniels A, Lafage V, Bess S, Klineberg E, Shaffrey C, Jain A, Smith J, ISSG. North American Spine Society Annual Meeting, Boston, MA, USA, 2016.
  47. Poster #40: Low Body Mass is a Negative Independent Risk Factor in Elective Spinal Surgery. Jalai CM, Poorman GW, Line B, Bess S, Vira S, Diebo B, Foster N, Oren J, Protopsaltis T, Buckland A, Errico T, Lafage V, Passias PG. North American Spine Society Annual Meeting, Boston, MA, USA, 2016.
  48. Poster #42: Congenital versus Idiopathic Scoliosis: Comparison of In-Hospital Co-morbidities Using Nationwide Inpatient Database (KID). Passias PG, Poorman GW, Jalai CM, Diebo B, Vira S, Baker J, Shenoy K, Hasan S, Buza J, Bronson W, Paul J, Kaye I, Atanda A, Cassily R, Foster N, Oren J, Lafage V, Errico T. North American Spine Society Annual Meeting, Boston, MA, USA, 2016.
  49. Poster #64: Measurement of Spinopelvic Angles on Prone Intraoperative Long-Cassette Lateral Radiographs Predicts Postoperative Standing Global Alignment in Adult Spinal Deformity. Oren J, Day L, Baker J, Foster N, Moses M, Ramchandran S, Cruz D, Jalai C, Cassilly R, Passias PG, Bess S, Errico T, Protopsaltis T. North American Spine Society Annual Meeting, Boston, MA, USA, 2016.
  50. Poster #72: Life is a Lordosing Event in the Subaxial Cervical Spine: An Analysis of Upper and Lower Cervical Regions Based on Age and Thoracolumbar Sagittal Malalignment. Henry J, Lafage R, Liabaud B, Protopsaltis T, Passias PG, Buckland A, Errico T, Bao H, Ramchandran S, Day L, Jalai C, Poorman G, Cruz D, Schwab F, Lafage V. North American Spine Society Annual Meeting, Boston, MA, USA, 2016.
  51. Poster #73: Princpial Radiographic Characteristics for Cervical Deformity: A Health-Related Quality of Life Analysis. Bao H, Varghese J, Lafage R, Liabaud B, Day L, Jalai C, Cruz D, Errico T, Protopsaltis T, Passias PG, Buckland A, Schwab F, Lafage V. North American Spine Society Annual Meeting, Boston, MA, USA, 2016.
  52. Poster #81: Limitations of Using Population-Based Databases to Assess Trends in Spinal Stereotactic Surgery. McClelland S, Jalai C, Ryu S, Passias PG. North American Spine Society Annual Meeting, Boston, MA, USA, 2016.
  53. Poster #82: Incidence of Congenital Spinal Abnormalities Among Paediatric Patients and Their Association with Scoliosis and Systemic Anomalies. Passias PG, Poorman GW, Jalai C, Diebo B, Vira S, Baker J, Shenoy K, Hasan S, Buza J, Bronson W, Paul J, Kaye I, Atanda A, Foster N, Cassilly R, Oren J, Lafage V, Errico T. North American Spine Society Annual Meeting, Boston, MA, USA, 2016.
  54. Poster #112: Lumbar stenosis severity predicts worsening sagittal malalignment on full-body standing stereographs. Buckland A, Ramachandran S, Day L, Bess S, Protopsaltis T, Passias PG, Diebo B, Liabaud B, Lafage R, Lafage V, Errico T.  North American Spine Society Annual Meeting, Boston, MA, USA, 2016.
  55. Poster #114: Comparative Analysis of Perioperative Outcomes Using Nationaly Derived Hospital Discharge Data Relative to a Prospective Multicenter Surgical Database of Adult Spinal Deformity Surgery. Poorman G, Passias PG, Buckland A, Jalai C, Kelly M, Sciubba D, Neuman B, Hamilton K, Jain A, Lafage V, Bess S, Lineberg E, ISSG. North American Spine Society Annual Meeting, Boston, MA, USA, 2016.
  56. Poster #115: Continuous Variable Predictive Modelling of Length of Hospital Stay (LOS) Following Adult Spinal Deformity (ASD) Correction: Analysis of 653 Patients with an Accuracy of 75% within 2 Days. Scheer J, Ailon T, Smith J, Hart R, Burton D, Bess S, Neuman B, Passias PG, Miller E, Schaffrey C, Schwab F, Lafage V, Klineberg E, Ames C, ISSG. North American Spine Society Annual Meeting, Boston, MA, USA, 2016.
  57. Poster #118: When do Surgeons Choose Upper Thoracic versus Lower Thoracic Proximal End Point for Fusion of Adult Spinal Deformity Patients? Daniels A, Line B, Lafage V, Smith J, Schaffrey C, Gupta M, Klineberg E, Schwab F, Passias PG, Burton D, Bess S, Ames C, Hart R, ISSG. North American Spine Society Annual Meeting, Boston, MA, USA, 2016.
  58. Poster #120: Predicting Satisfied, Non-Depressed with Optimal Self-Image Patients at Two-Year Follow-up: Propensity Matched Comparisons in Operative and Non-Operative Adult Spinal Deformity Cohorts. Diebo B, Jalai C, Poorman G, Libaud B, Errico T, Bess S, Soroceanu A, Hamilton DK, Sciubba D, Klineberg E, Lafage R, Lafage V, Schwab F, Passias PG, ISSG. North American Spine Society Annual Meeting, Boston, MA, USA, 2016.
  59. Poster #134: The Health Impact of Symptomatic Adult Cervical Deformity: Comparison to United States Population Norms and Chronic Disease States Based on the EQ5D. Smith JS, Line B, Bess S, Shaffrey CI, Kim HJ, Mundis G, Scheer J, Klineberg E, Gupta M, Daniels A, Kelly M, Gum J, Schwab F, Lafage V, Lafage R, Ailon T, Passias PG, Protopsaltis TS, Hart RA, Burton D, Deviren V, Ames CP, International Spine Study Group.  North American Spine Society Annual Meeting, Boston, MA, USA, 2016.
  60. Poster #135: Outcomes of Operative Treatment for Adult Cervical Deformity: A Prospective Multicenter Assessment with One-Year Follow-up. Smith JS, Shaffrey CI, Kim HJ, Mundis G, Gupta M, Klineberg E, Schwab F, Lafage V, Lafage R, Passias PG, Protopsaltis TS, Neuman B, Ailon T, Daniels A, Scheer J, Line B, Soroceanu A, Kebaish K, Hart RA, O’Brien M, Burton D, Deviren V, Albert D, Riew D, Bess S, Ames CP, International Spine Study Group.  North American Spine Society Annual Meeting, Boston, MA, USA, 2016.
  61. Poster #137: Comparative Analysis of Intraoperative Complications Between a Multicenter Prospective Cervical Deformity Database versus a Nationwide Sample. Jalai C, Passias PG, Poorman G, Smith J, Scheer J, Hamilton, D, Sciubba D, Mundis G, Klineberg E, Lafage V, Shaffrey C, Ames CP, International Spine Study Group.  North American Spine Society Annual Meeting, Boston, MA, USA, 2016.
  62. Poster #139: Does Myelopathy or Alignment Improvement Drive Acute Postoperative Outcomes in Cervical Deformity Patients? Passias PG, Jalai C, Smith J, Poorman G, Protopsaltis TS, Neuman B, Sciubba D, Diebo B, Lafage R, Lafage V, Ames CP, Shaffrey C, International Spine Study Group.  North American Spine Society Annual Meeting, Boston, MA, USA, 2016.
  63. Poster #143: Outcomes of Operative Treatment for Adult Cervical Deformity: A Prospective Multicenter Analysis of Early Distal Junctional Kyphosis (DJK) after Cervical Deformity Correction.  Protopsaltis TS, Ramchandran S, Kim HJ, Neuman B, Miller E, Passias PG, Soroceanu A, Lafage V, Lafage R, Gupta M, Hart RA, Smith JS, Schwab F, Bess S, Shaffrey CI, Ames CP, International Spine Study Group.  North American Spine Society Annual Meeting, Boston, MA, USA, 2016.
  64. Poster #166: Recovery Kinetics of Radiographic and Implant-Related Revision Patients Following Adult Spinal Deformity Surgery. Passias PG, Jalai C, Lafage V, Scheer J, Hamilton DK, Line B, Bess S, Schwab F, Ames C, Burton D, Hart R, Klineberg E, International Spine Study Group.  North American Spine Society Annual Meeting, Boston, MA, USA, 2016.
  65. Poster #190: Bone Morphogenetic Protein-2 in Adult Spinal Deformity Surgery: A Meta-Analysis. Poorman G, Jalai C, Boniello A, Worley N, McClelland, Passias PG. North American Spine Society Annual Meeting, Boston, MA, USA, 2016.
  66. Poster #10: Analysis of early distal junctional kyphosis (djk) after cervical deformity correction. Protopsaltis T, Ramchandran S, Kim HJ, Neuman B, Passias PG, Lafage V, Gupta M, Hart R, Schwab F, Bess S, Smith J, Shaffrey C, Ames C, ISSG. Cervical Spine Research Society Annual Meeting, Toronto, CA, 2016.
  67. Poster #24: The health impact of symptomatic adult cervical deformity: comparison to united states population norms and chronic disease states based on the eq5d.  Smith JS, Line B, Bess S, Shaffrey CI, Kim HJ, Mundis G, Scheer J, Klineberg E, Daniels A, Kelly M, Gum J, Schwab F, Lafage V, Lafage R, Ailon T, Passias PG, Protopsaltis TS, Hart R, Burton D, Deviren V, Ames CP, ISSG. Cervical Spine Research Society Annual Meeting, Toronto, CA, 2016.
  68. Poster #25: Three-column osteotomy for correction of cervical deformity: alignment changes and early complications in a multicenter prospective series of 24 patients.  Smith JS, Line B, Shaffrey CI, Kim HJ, Neuman B, Klineberg E, Schwab F, Lafage V, Lafage R, Scheer J, Protopsaltis TS, Passias PG, Mundis G, Hart R, Deviren V, Bess S, Ames CP, ISSG. Cervical Spine Research Society Annual Meeting, Toronto, CA, 2016.
  69. Poster #26: The importance of c2-slope as a singular marker of cervical deformity and the link between upper-cervical and cervico-thoracic alignment among cervical deformity patients.  Protopsaltis T, Ramchandran S, Kim HJ, Sciubba D, Passias PG, Lafage V, Scheer J, Klineberg E, Gupta M, Hart R, Mundis G, Bess S, Smith J, Shaffrey C, Ames C, ISSG.  Cervical Spine Research Society Annual Meeting, Toronto, CA, 2016.
  70. Poster #27: Upper cervical and infra-cervical compensation in cervical deformity patients. Ramchandran S, Protopsaltis T, Sciubba D, Scheer J, Daniels A, Passias PG, Lafage V, Kim HJ, Mundis G, Klineberg E, Hart R, Smith J, Shaffrey C, Ames C, ISSG.  Cervical Spine Research Society Annual Meeting, Toronto, CA, 2016.
  71. Abstract 2216: Spinal Stereotactic Body Radiotherapy in the United States: A Decade-Long Nationwide Analysis of Patient Demographics, Practice Patterns, and Trends Over Time. McClelland S 3rd, Kim E, Passias PG, Murphy JD, Attia A, Jaboin JJ. American Society for Radiation Oncology, 59th Annual Meeting, International Journal of Radiation Oncology*Biology*Physics in press, 2017.  
  72. Poster #280: Passias PG, Jalai C, Diebo B, Cruz D, Poorman G, Horn S, Zhou P, Beaubrun B, Buckland A, Day L, Liabaud B, Lafage R, Soroceanu A, Baker J, McClelland S, Oren J, Errico T, Schwab F, Lafage V. Full-Body Radiographic Analysis of Post-Operative Deviations from Age-Adjusted Alignment Goals in Adult Spinal Deformity Correction and Related Compensatory Recruitment. ISASS Annual Meeting, Boca Raton, USA, 2017.
  73. Poster #277: Jalai C, Diebo B, Cruz D, Poorman G, Vira S, Horn S, Moon J, Beaubrun B, Buckland A, Lafage R, Bess S, Errico T, Lafage V, Passias PG. The Impact of Obesity on Compensatory Mechanisms in Response to Progression Sagittal Malalignment. ISASS Annual Meeting, Boca Raton, USA, 2017.
  74. Poster #286: Passias PG, Poorman G, Jalai C, Neuman B, de la Garza-Ramos R, Miller E, Jain A, Sciubba D, McClelland S, Day L, Ramchandran S, Vira S, Diebo B, Horn S, Sure A, Tishelman J, Isaacs E, Bono O, Bess S, Gerling M, Lafage V. Morbidity of Adult Spinal Deformity Surgery in Elderly Has Declined Over Time. ISASS Annual Meeting, Boca Raton, USA, 2017.
  75. Poster #340: Passias PG, Oh C, Jalai C, Horn S, Poorman G, Sure A, Tishelman J, Lafage R, Diebo B, Scheer J, Smith J, Shaffrey C, Protopsaltis T, Kim HJ, Hart R, Lafage V, Ames C, ISSG. Predictive Model for Patient-Reported Outcomes Scores Following Cervical Spine Deformity Surgical Correction. ISASS Annual Meeting, Boca Raton, USA, 2017.
  76. Poster #272: Passias PG, Poorman G, Jalai C, Line B, Diebo B, Horn S, Sure A, Moon J, Park P, Hart R, Burton D, Schwab F, Lafage V, Bess S, Errico T, ISSG. Outcomes of Open Staged Corrective Surgery in the Setting of Adult Spinal Deformity.  ISASS Annual Meeting, Boca Raton, USA, 2017.
  77. Poster #553: Diebo B, Jalai C, Poorman G, Horn S, Moon J, Naziri Q, Errico T, Patel A, Lafage V, Paulino C, Passias PG. Psychological Burden of Musculoskeletal Diseases: Investigation on Spine, Hip and Knee In-Hospital Patients. ISASS Annual Meeting, Boca Raton, USA, 2017.
  78. Poster #314: Diebo G, Jalai C, Tishelman J, Poorman G, Horn S, Bono O, Moon J, Passias PG. Diminished Mental Health Prior to Cervical Fusion Can Have a Profound Effect on Patient Derived Outcomes Depending on Presenting Diagnosis: Results of a Prospective Surgeon Driven Cervical Database at 2 Years. ISASS Annual Meeting, Boca Raton, USA, 2017.
  79. Poster #566: Diebo B, Patel A, Paulino C, Poorman G, Varghese J, Lafage R, Jalai C, Horn S, Zhou P, Lafage V, Schwab F, Errico T, Naziri Q, Passias PG. Disseminated Intravascular Coagulopathy (DIC) Following Spinal Fusion for Congenital and Idiopathic Scoliosis: A Study on Nationwide Kid's Inpatient Database (KID). ISASS Annual Meeting, Boca Raton, USA, 2017.
  80. Poster #213: Prevalence, Location, Type, and Predictors of Neck and Back Pain in an Underserved Population of Adolescent Idiopathic Scoliosis. Bassel G. Diebo, MD; Louis M. Day, BS; Frank A. Segreto, BS; Lee Bloom, MD; Westley Hayes, MS; Mikhail Tretiakov; Patrick J. Mixa, MD; James Messina; Elian Shepherd, MD; Ashish Patel, MD; Daniel Cukor, PhD; Peter G. Passias, MD; Qais Naziri, MD, MBA; William P. Urban, MD; Carl B. Paulino, MD. Scoliosis Research Society Annual Meeting, Philadelphia, United States, 2017.
  81. Poster #222: The Ankle-Pelvic Angle (APA): A Summary Measurement of Pelvic and Lower Extremity Compensation Max Vaynrub; Jared C. Tishelman, BA; Samantha R. Horn, BA; Peter G. Passias, MD; Aaron J. Buckland, MBBS, FRACS; Thomas J. Errico, MD; Themistocles S. Protopsaltis, MD. Scoliosis Research Society Annual Meeting, Philadelphia, United States, 2017.
  82. Poster #271: Contemporary Presentation and Recent Surgical Trends of Klippel-Feil Syndrome Peter G. Passias, MD; Gregory W. Poorman, BA; Charles Wang, BS; Max Vaynrub, MD; Jared C. Tishelman, BA; Muhammad Burhan Janjua, MD; Dennis Vasquez-Montes, MS; Peter L. Zhou, BA; John Moon, BS; Samantha R. Horn, BA; Bassel G. Diebo, MD; Shaleen Vira, MD. Scoliosis Research Society Annual Meeting, Philadelphia, United States, 2017.
  83. E-Poster #062: Sustained Changes in Age-Adjusted Full-Body Compensation Following Adult Spinal Deformity Corrective Surgery. Passias PG, Jalai C, Poorman G, Bortz C, Segreto F, Diebo B, Errico T, Lafage V, Gerling M. Lumbar Spine Research Society Annual Meeting 2018, Chicago, USA.
  84. E-Poster #059: Predictors of Adverse Discharge Disposition in Adult Spinal Deformity and Associated Costs. Passias PG, Qureshi R, DIebo B, Paul J, Horn S, Segreto F, Bess S, Gerling M, Hassanzadeh H. Lumbar Spine Research Society Annual Meeting 2018, Chicago, USA.
  85. E-Poster: Regional and Segmental Changes of the Spine from Standing to Sitting: A Chain of Compensation. Horn SR, Segreto FA, Bortz C, Vasquez-Montes D, Zhou PL, Moon J, Steinmetz L, Frangella NJ, Varlotta CG, Stekas N, Ge DH, Johnson BC, Diebo BG, Vira S, Moawad MA, Deflorimonte C, Lafage R, Lafage V, Gerling MC, Fischer CR, Schwab FJ, Protopsaltis TS, Errico TJ, Buckland AJ,  Passias PG. North American Spine Society Meeting 2018, Los Angeles, USA.
  86. E-Poster: ODI Can Predict PROMIS Physical Function, Pain Intensity, and Pain Interference Domain Scores in Thoracolumbar Patients. Horn SR, Segreto FA, Bortz C, Vasquez-Montes D, Steinmetz L, Varlotta CG, Stekas N, Frangella NJ, Ge DH, DelSole EM, Lafage R, Lafage V, Gerling MC, Protopsaltis TS, Buckland AJ, Fischer CR, Errico TJ,  Passias PG. North American Spine Society Meeting 2018, Los Angeles, USA.
  87. E-Poster: Limited Morbidity and Radiographic Benefit of C2 vs Subaxial Cervical Upper-Most Instrumented Vertebrae. Passias PG, Bortz C, Lafage R, Lagafe V, Smith JS, Line B, Eastlack RK, Horn SR, Segreto FA, Sciubba DM, Klineberg EO, Soroceanu A, Burton DC, Schwab FJ, Bess S, Shaffrey CI, Ames CP, ISSG. North American Spine Society Meeting 2018, Los Angeles, USA.
  88. E-Poster: Effect of Cervical Deformity Correction on Stenosis, Spinal Canal and Cord Compression utilizing Magnetic Resonance and Computed Tomography Imaging Modalities. Passias PG, Segreto FA, Lafage V, Lafage R, Smith JS, Line BG, Bortz C, Horn SR, Klineberg EO, Neuman BJ, Kim HJ, Kelly MP, Vira S, Burton DC, Hart RA, Schwab FJ, Bess S, Hockley A, Shaffrey CI, Ames CP, ISSG. North American Spine Society Meeting 2018, Los Angeles, USA.
  89. E-Poster: "Predicting Extended Operative Time and Length of Inpatient Stay in Cervical Deformity Corrective Surgery."  Passias PG, Segreto FA, Lafage V, Lafage R, Smith JS, Line BG, Bortz C, Horn SR, Klineberg EO, Neuman BJ, Kim HJ, Kelly MP, Vira S, Burton DC, Hart RA, Schwab FJ, Bess S, Hockley A, Shaffrey CI, Ames CP, ISSG. Congress of Neurological Surgeons 2018 Annual Meeting. Houston, USA.  
  90. E-Poster: "Chiari Malformation Clusters Describe Differing Presence of Concurrent Anomalies based on Chiari Type." Abstract accepted as Poster presentation to the Congress of Neurological Surgeons 2018 Annual Meeting. Houston, USA.  
  91. "Tethered Cord Syndrome in the United States: Cluster Analysis of Presenting Current Anomalies and Associated Conditions." Abstract accepted as Poster presentation to the Congress of Neurological Surgeons 2018 Annual Meeting. Houston, USA.  
  92. "Development of a Modified Cervical Deformity Frailty Index: A Streamlined Clinical Tool for Preoperative Risk Stratification." Abstract accepted as Poster presentation to the Congress of Neurological Surgeons 2018 Annual Meeting. Houston, USA.  
  93. "Fatty Infiltration of the Cervical Extensor Musculature in Adult Cervical Deformity Patients: An Increased Susceptibility to Complication Occurrence and Sagittal Malalignment." Abstract accepted as Poster presentation to the Congress of Neurological Surgeons 2018 Annual Meeting. Houston, USA.  
  94. "The Influence of Spinal Cord and Canal Compression on Neurologic Functionality and Gait Impairment: A Baseline Investigation of 55 Cervical Deformity Patients." Abstract accepted as Poster presentation to the Congress of Neurological Surgeons 2018 Annual Meeting. Houston, USA.  
  95. "Effect of Cervical Deformity Correction on Stenosis, Spinal Canal and Cord Compression utilizing Magnetic Resonance and Computed Tomography Imaging Modalities." Abstract accepted as Poster presentation to the Congress of Neurological Surgeons 2018 Annual Meeting. Houston, USA.  
  96. E-Poster #6: “Quantitative Age-Adjusted Targets For Ideal Cervicothoracic Sagittal Alignment In Asymptomatic Adults”. Passias PG, Bortz C, Vasquez-Montes D, Segreto F, Horn S, Frangella F, Stekas N, Steinmetz L, Shenoy K, Zhou P, Varlotta C, Ge D, Manning J, Moawad M, Deflorimonte C, Diebo B, Vira S, Gerling M, Lafage R, Schwab F, Fischer C, Protopsaltis T, Lafage V, Buckland A, Errico T. Cervical Spine Research Society Annual Meeting Scottsdale, USA 2018.
  97. Peter G Passias MD, Frank A. Segreto BS, Renaud Lafage MS, Virginie Lafage PhD, Justin S Smith MD, PhD, Breton G. Line BS, Justin K Scheer MD, Gregory M Mundis MD, D. Kojo Hamilton MD, Han Jo Kim MD, Bassel G. Diebo MD, , Munish C Gupta MD, Chief of Spine, Eric O. Klineberg MD, Douglas C. Burton MD, Robert A. A Hart MD, Frank J. Schwab MD, Christopher I. Shaffrey MD, Christopher P. Ames MD, Shay Bess MD, International Spine Study Group. Recovery Kinetics Following Spinal Deformity Correction: A Comparison Of Isolated Cervical, Thoracolumbar, And Combined Deformity Morphometries. Accepted as E-Poster to CSRS 2018.
  98. Peter G Passias MD, Samantha R Horn BA, Virginie Lafage PhD, Renaud Lafage MS, Justin S Smith MD, PhD, Breton G. Line BS, Shaleen Vira MD, Gregory M Mundis MD, Bassel G. Diebo MD, , Themistocles S. Protopsaltis MD, Han Jo Kim MD, Alan H Daniels MD, Eric O. Klineberg MD, Douglas C. Burton MD, Robert A. A Hart MD, Frank J. Schwab MD, Shay Bess MD, Christopher I. Shaffrey MD, Christopher P. Ames MD, International Spine Study Group. Risk Benefit Assessment Of Major Versus Minor Osteotomies For Flexible And Rigid Cervical Deformity Correction. Accepted as E-Poster to CSRS 2018.
  99. Frank A. Segreto BS, Cole Bortz BA, Samantha R Horn BA, Dennis Vasquez-Montes MS, Tina Raman MD, Joseph F Baker FRCS, Tomas K Kuprys MD, Mohamed A Moawad MPH, Bassel G. Diebo MD, , Shaleen Vira MD, Renaud Lafage MS, Virginie Lafage PhD, Themistocles S. Protopsaltis MD, Aaron J. Buckland MBBS, FRACS, Thomas J. Errico MD, Peter G Passias MD. Traumatic Cervical Spinal Cord Injuries With Fracture: An Investigation Of Early Versus Delayed Surgery Among 6,636 Propensity-Matched Patients. Accepted as E-Poster to CSRS 2018.
  100. Samantha R Horn BA, Peter G Passias MD, Cheongeun Oh PhD, Virginie Lafage PhD, Renaud Lafage MS, Justin S Smith MD, PhD, Breton G. Line BS, Neel Anand MD, Cole Bortz BA, Robert K. Eastlack MD, Vedat Deviren MD, Alan H Daniels MD, Han Jo Kim MD, Eric O. Klineberg MD, Douglas C. Burton MD, Robert A. A Hart MD, Frank J. Schwab MD, Shay Bess MD, Christopher I. Shaffrey MD, Christopher P. Ames MD, International Spine Study Group. Predicting The Combined Occurrence Of Poor Clinical And Radiographic Outcomes Following Cervical Deformity Corrective Surgery. Accepted as E-Poster to CSRS 2018.
  101. Samantha R Horn BA, Dennis Vasquez-Montes MS, Frank A. Segreto BS, Cole Bortz BA, Nicholas Stekas BS, Leah Steinmetz BA, Christopher G Varlotta BS, Aaron Hockley MD, Nicholas Frangella BS, David Ge BA, Bassel G. Diebo MD, Renaud Lafage MS, Shaleen Vira MD, Michael Gerling MD, Virginie Lafage PhD, Aaron Buckland MBBS, FRACS, Themistocles S Protopsaltis MD, Thomas J Errico MD, Peter G Passias MD. Cervical Deformity Correction Fails To Achieve Age-Adjusted Spino-Pelvic Alignment Targets. Accepted as E-Poster to CSRS 2018.
  102. Frank A. Segreto BS, Peter G Passias MD, Virginie Lafage PhD, Renaud Lafage MS, Justin S Smith MD, PhD, Breton G. Line BS, Bassel G. Diebo MD, , Michael P. Kelly MD, MS, Gregory M Mundis MD, Themistocles S. Protopsaltis MD, Alex Soroceanu MD, FRCS(C), MPH, Han Jo Kim MD, Eric O. Klineberg MD, Douglas C. Burton MD, Robert A. A Hart MD, Frank J. Schwab MD, Shay Bess MD, Christopher I. Shaffrey MD, Christopher P. Ames MD, International Spine Study Group. The Influence Of Surgical Intervention And Sagittal Alignment On Postoperative Frailty Status In Cervical Deformity Patients. Cervical Spine Research Society Annual Meeting 2018.

Scientific Textbooks

  • Sole Editor of Cervical Myelopathy. Jaypee Brothers, 2016.
  • Adult Lumbar Scoliosis: A Clinical Guide to Diagnosis and Management. Chapter 11: Biologics. Peter G. Passias, MD
  • Dr. Elkwood Rehabilitative Surgery. An Interdisciplinary Approach to Restoring Functionality. Chapter 5: Spine Trauma. David Kaye, M.D., Peter G. Passias, MD
  • Spinal Compression Fractures in Osteoporotic and Pathologic Bone. Chapter 16: Osteoporotic Vertebral Compression Fractures Adjacent to Previous Spinal Fusion. Springer Publishing [in print].
  • Evidence Based Orthopedics. Section 5: Adolescent and Adult Spinal Deformity--Operative Management. Peter G. Passias, MD [in print].
  • Cervical Spine Deformity Surgery. Chapter 20: Relationship of Cervical Spondylotic Myelopathy to Cervical Deformity. Thieme Publishers [in print].
  • Cervical Spine Deformity Surgery. Chapter 30: Choosing Lower Instrumented Levels in Cervical Deformity. Thieme Publishers [in print].

 

Articles Reviewed by Peter G. Passias, MD, FAAOS

Bundled Payments in Spine Surgery: Current Understanding and Future Directions

Efficacy of the bundled payment model has been demonstrated in total joint arthroplasty. However, concerns have been raised on whether bundled payments are appropriate for spine surgery.

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Spine Wave, Inc.; Zimmer Biomet; DePuy Synthes; Medicrea
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