Sensitivities of lumbar segmental kinematics and functional tissue loads in sagittal bending to design parameters of a ball-in-socket total disc arthroplasty prosthesis. Issue 9 (3rd July 2020)

• Record Type: Journal Article
• Authors: Zhou, Chaochao; Willing, Ryan
• Is Part Of: Computer methods in biomechanics and biomedical engineering. Volume 23:Issue 9(2020)
• Page Start: 536
• Page End: 547
• Publication Date: 2020-07-03
• Subjects: Ball-in-socket disc prosthesis -- design sensitivity -- finite element analysis -- lumbar spine -- segmental kinematics -- spinal tissue load-sharing; Biomechanics -- Data processing -- Periodicals; Biomedical engineering -- Periodicals; Biomechanics -- Periodicals; Biomedical Engineering -- methods -- Periodicals; Computing Methodologies -- Periodicals; 612.7
• DOI: 10.1080/10255842.2020.1745783
• Languages: English
• ISSNs: 1025-5842

Abstract

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.