Outcomes of Allogenic Cages in ALIF and PLIF: Conclusion and References
Nurse Practitioner
The Spine Education & Research Institute
Thornton, CO
Bone has been used in a variety of shapes and configurations for interbody reconstruction for decades. More recently, the preparation and machining of allograft bone allows it to be used and to function similarly to other metal mechanical spacers. FRA and PLIF biological cages are designed along with a set of instruments that allow the surgeon to perform these procedures using a minimally invasive approach. Both of these implants facilitate preservation of the endplates and anatomic restoration of the sagittal alignment to provide the optimal "biological" environment in order to obtain arthrodesis (Figs, 9a-c, 10).
This biological process of fusion can be monitored with conventional techniques, unlike common metallic anterior column implants. Our clinical experience in these 150 patients is encouraging. Future development of additional BMP may increase the arthrodesis rate, reduce the time to consolidation, and alter the need for rigid posterior instrumentation.
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