Implications of Artificial Disc Design on the Intersegmental Biomechanics of the Lumbar Spine

Abstract

INTRODUCTION: Design of total disc replacement (TDR) prosthesis plays an important role in the long-term clinical performance of these implants. Prodisc-L (Spine Solutions, Inc. Synthes, Paoli, PA, USA), a semi-constrained TDR system, has a ball-and-socket based design; whereas SB Charité III (DePuy Spine, Inc, Raynham, MA, USA) has a theoretically unconstrained articulation which allows the mobile core to slide freely in the A-P direction between two metal endplates during spinal motion. The biomechanical efficacies of these two TDR designs on lumbar spine kinematics and loading transfer have not been fully elucidated. In this study, a finite element (FE) analysis was performed to evaluate the range of motion (ROM) changes and facet load transfer of the lumbar spine following TDR with semi-constrained (Prodisc-L) and unconstrained (Charité III) disc prostheses.

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Cite this paper

@inproceedings{Chen2007ImplicationsOA, title={Implications of Artificial Disc Design on the Intersegmental Biomechanics of the Lumbar Spine}, author={Y Chen and J Ahn and Lee and J Park}, year={2007} }