Biomechanical analysis of a disc prosthesis distal to a scoliosis model.

Study Design: Biomechanical study of bovine spines.

Objective: The purpose of this study was to perform a biomechanical test to analyze intervertebral deflections following placement of both 1 and 2 semiconstrained TDRs in the subjacent segments of a long fusion.

Summary Of Background Data: Long-term sequela of long lumbar fusion for scoliosis include adjacent segment disease and flatback syndrome.