Baron S. Lonner, MD - Professor of Orthopaedic Surgery

About Baron S. Lonner, MD

Dr. Baron Lonner is Chief of Minimally Invasive Scoliosis Surgery at Mount Sinai Hospital and Spine Center in New York, NY. His practice is dedicated to providing comprehensive nonoperative and surgical treatment of patients with scoliosis and other spinal deformities. He is Professor of Orthopaedic Surgery at Icahn School of Medicine at Mount Sinai.

Dr. Lonner received his medical degree from Boston University. He obtained formal scoliosis training during his residency at Albert Einstein College of Medicine and Montefiore Medical Center. Dr. Lonner completed a Spinal Surgery Fellowship focusing on scoliosis and spine surgery at Cornell University Medical Center and Hospital for Special Surgery. He is Board Certified in Orthopaedic Surgery.

Dr. Lonner is an innovator in the area of minimally invasive spine surgery for scoliosis, kyphosis, and other conditions. He has more than 150 publications in the orthopaedic literature reflecting research focused on scoliosis and spinal deformity.

He is a member of many prestigious spine organizations, including the Scoliosis Research Society (SRS), North American Spine Society (NASS), and American Academy of Orthopaedic Surgery (AAOS). Dr. Lonner is a reviewer for four spine journals and is an associate editor on the editorial board of the Journal of Spinal Deformity.

Publications

Click here to view Dr. Lonner's extensive list of publications in leading peer reviewed journals, reviews, book chapters and books.

Articles Written by Baron S. Lonner, MD

Two Scoliosis Surgery Options that Aren’t Fusion

Two procedures approved by the FDA in 2019 provide new options for people in need of surgery for scoliosis. Learn more about these minimally invasive, motion-sparing procedures from our expert.

FAQs about Flatback Syndrome

A loss of normal low back lordosis or actual kyphosis in the lumbar spine may produce a symptom called flatback syndrome.

Recovery from Scoliosis Surgery

If you're getting ready for scoliosis surgery, read these recovery tips from a spine surgeon. You'll learn what will happen at the hospital just after surgery and what will happen at home.

How to Prepare for Scoliosis Surgery

Three tips how to prepare for scoliosis surgery from an orthopaedic spine surgeon who specializes in treating scoliosis. To understand your potential surgical risk factors know about the types of pre-operative testing you may undergo.

Pediatric Scoliosis Surgical Technologies: Growing Rods, Growth-Guided Devices, Vertebral Body Tethering

Traditional and magnetically controlled growing rods, growth-guided devices, and vertebral body tethering (fusionless correction) are explained and shown in many pre- and postoperative x-rays.

Pediatric Scoliosis Surgery Guide

Pediatric Scoliosis Surgery Guide provides information about curve correction in young patients, including spinal and in-situ fusion, instrumentation, and hemivertebra removal.

Flatback Syndrome (Kyphosis): Possible Scoliosis Surgery Complication

Patients who had Harrington rods implanted to correct scoliosis may develop flatback syndrome (kyphosis). What is this spinal condition? See images in this article.

Early Onset Scoliosis in Children

Early onset scoliosis (EOS) is an abnormal sideways curvature of the spine found in children under the age of 10 years. Scoliosis expert explains EOS diagnosis and treatment.

Common Questions about Scoliosis Surgery

Five questions patient ask about scoliosis surgery answered by a spine specialist include pregnancy and potential allergic reaction to spinal instrumentation.

Flatback Syndrome: Spine Surgery to Correct Spinal Alignment

Flatback syndrome surgery is performed to correct spinal alignment to normal or near normal to relieve stress on the postural muscles of the back, hips, and knees.

Scoliosis Surgery: Approaches and Procedures

Baron Lonner, MD, a spine surgeon, gives details on all spine surgery procedures used to treat scoliosis. Educate yourself about scoliosis surgery options.

Kyphosis Surgery

The goal of spine surgery to correct kyphosis is to restore the spine to normal kyphosis, which is a curve between 20 and 50 degrees.

Images of Scoliosis Curves

See x-rays of scoliosis curves. What does your curve look like?

Case Studies Presented by Baron S. Lonner, MD

Progressive Thoracic Idiopathic Scoliosis

Presented by: B. Lonner MD

The patient is a 15-and-7/12 year-old female with a right thoracic idiopathic scoliosis of 80º. She reports backache when seated for prolonged periods of time; such as the 9-hour car drive for this appointment.

Adolescent Idiopathic Scoliosis in a 17-year-old Boy

Presented by: B. Lonner MD

The patient is a 17-year-old boy who presented with AIS and worsening truncal deformity. He indicated increasing activity-related discomfort over the lumbar convexity over the prior 6 months and significant waistline changes.

Vertebral Body Tethering in Progressive Adolescent Idiopathic Scoliosis

Fusionless emerging technology case

Presented by: B. Lonner MD

The family of healthy girl with progressive scoliosis, with a great deal of concern about spinal fusion (eg, flexibility, function) sought consultation to discuss surgical correction. Their child is an avid lacrosse and basketball player and enjoys horseback riding.

Severe Progressive Adult Idiopathic Scoliosis

Presented by: B. Lonner MD

The patient is a 54-year-old female diagnosed with idiopathic scoliosis as an adolescent. Twenty years earlier, despite the presence of a significant progressive spinal deformity, she was told that she was not a surgical candidate because of her age.

Articles Reviewed by Baron S. Lonner, MD

Treating Adult Onset Scoliosis Starts with Nonsurgical Approaches

Scoliosis doesn’t just affect kids. Scoliosis in adults is often due to degenerating discs in the spine. Nonsurgical treatment usually works well.

Adolescent Idiopathic Scoliosis Bracing Failure Risk Factors

Study data on adolescent idiopathic scoliosis risk factors for brace treatment failure and curve progression can assist in patient counseling and treatment decision-making.

Race Impacts Severity of Adolescent Idiopathic Scoliosis and Likelihood of Surgery

"Hopefully, the findings of this study and other related investigations will lead to a better understanding among healthcare providers, in this case, scoliosis specialists".

Chêneau Brace Prevents Curve Progression and Improves Sagittal Parameters in Adolescent Idiopathic Scoliosis

Long-term use of the Chêneau brace in the treatment of adolescent idiopathic scoliosis may be associated with significant improvements in kyphosis, lordosis...

Scheuermann's Kyphosis (Scheuermann's Disease): Abnormal Curvature of the Spine

A normal, healthy spine should have curves in it. When you look at it from the side, you should see these curves. However, too much curvature in the thoracic spine (mid-back) can be problematic. That’s a condition called kyphosis.

Recombinant Bone Morphogenetic Protein Linked to Reduce Risk of Reoperation Following Spine Fusion for Adult Scoliosis

It is incumbent upon surgeons and researchers to provide clinical data for use of BMP in fusion surgery not only from large administrative databases, but also from single center studies.

Ankylosing Spondylitis: Description and Diagnosis

Ankylosing Spondylitis (AS) is a chronic inflammatory arthritis condition that can affect the spine. Spine expert-written article on ankylosing spondylitis and how it's diagnosed.

Scheuermann's Kyphosis: Non-Operative and Surgical Treatment

Treatment for Scheuermann's kyphosis depends on the patient's age, severity of the curve, and the presence of neurological problems.

Managing Neurological Complications in Pediatric Spinal Deformity Surgery

Improving neurological outcomes in spinal deformity surgery include risk severity stratification, experience, intraoperative monitoring, and uniform response to neuromonitoring alerts.

Radiation-Free Surface Topography Is Highly Correlated With X-Ray Outcomes and Self-Image in Adolescent Idiopathic Scoliosis

Study explores scoliotic body shape distortions that are not depicted by x-rays routinely used to assess spinal curvature and improvements with corrective surgery.

Thoracoscopy in the Treatment of Scoliosis

Thoracoscopy is a minimally invasive spine surgery performed to treat thoracic scoliosis. Thoracoscopy combines the science of endoscopy (video-assisted surgery) with thoracotomy (access to chest, or thoracic spine).

Surgery for Ankylosing Spondylitis

Seldom is surgery needed to treat ankylosing spondylitis, however, here are 4 indications your surgeon may consider before recommending spine surgery.

Surgical Management of Thoracolumbar Deformity in Ankylosing Spondylitis

Ankylosing Spondylitis (AS) is a chronic inflammatory disease that at times may require surgery.

Kyphosis and Scheuermann's Disease

Scheuermann's disease is a type of kyphosis that occurs when healthy vertebral become wedge shaped.

Discussion: Isthmic Spondylolisthesis: Reduction vs. In-Situ Fusion?

A discussion of the SOCON Spondylolisthesis Reduction System.

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Author's Statement

I, or an immediate family member, have a financial interest(s) or affiliation(s) with the following commercial companies whose products and / or services may be mentioned in the materials I have authored, edited or reviewed for presentation on Remedy Health Media, LLC’s websites.

Disclosed Relationships

Stock Options/Shareholder

ApiFix; DePuy Synthes (Expedium Verse Spine System); Zimmer Biomet (The Tether)

Speaking/Teaching

ApiFix, DePuy Synthes; Zimmer Biomet

Board of Directors

SpineSearch

Scientific/Other Advisory Board

ApiFix, DePuy Synthes; Zimmer Biomet

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About Baron S. Lonner, MD

Publications

Articles Written by Baron S. Lonner, MD

Case Studies Presented by Baron S. Lonner, MD

Articles Reviewed by Baron S. Lonner, MD

Financial Disclosures

Author's Statement

Disclosed Relationships

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