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Sensitivities of lumbar segmental kinematics and functional tissue loads in sagittal bending to design parameters of a ball-in-socket total disc arthroplasty prosthesis

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  • Chaochao Zhou
  • Ryan Willing

Abstract

Lumbar total disc arthroplasty (TDA) is an attractive option for the treatment of spinal disorders. However, post-operative complications may cause revision surgery. In this study, an in-depth biomechanical analysis was performed to test how sensitive post-operative spinal responses in sagittal bending were to design parameters of a widely used ball-in-socket TDA design. Our simulation results revealed that lowering the intervertebral distraction, posteriorly positioning the implant, or decreasing the radius of curvature of the metal-on-polyethylene bearing surface could result in spinal responses which better matched normal spinal kinematics, but deviated further from the normal spinal tissue load-sharing pattern.

Suggested Citation

  • Chaochao Zhou & Ryan Willing, 2020. "Sensitivities of lumbar segmental kinematics and functional tissue loads in sagittal bending to design parameters of a ball-in-socket total disc arthroplasty prosthesis," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 23(9), pages 536-547, July.
    • Handle: RePEc:taf:gcmbxx:v:23:y:2020:i:9:p:536-547
    DOI: 10.1080/10255842.2020.1745783
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