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Yang Liu

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Proceedings Article | 11 September 2024 Open Access

Parametric design and wear study of artificial knee prosthesis

Yimo Han, Xupeng Wang, Wenhui Chen, Yu Guo, Yang Liu

Proceedings Volume 13270, 132700W (2024) https://doi.org/10.1117/12.3039038

KEYWORDS: Gait analysis, Design, Contour modeling, 3D modeling, Reverse modeling, Computed tomography, Modeling, Biomechanics, 3D mask effects

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Objective: Propose a method for modeling knee joint prostheses and comprise the construction of multiple sets of prostheses with varying geometries to investigate their wear properties. Methods: Multiple sets of total knee prostheses were built based on natural knee CT images by curve fitting method, and the contact and wear properties of the prostheses were simulated using finite element analysis. Results: The results of the simulation demonstrated that, for the same material, the prosthesis with a larger radius of the sagittal anterolateral contour curve of the tibial component exhibited superior wear performance, and the posteriorly inclined prosthesis demonstrated superior wear performance compared to the horizontal prosthesis. Under the same structure, the wear performance of the UHMWPE material was found to be superior to that of the PEEK material, regardless of the prosthesis structure. Conclusion: Tibial components with a larger radius of sagittal plane curve and tibial components with posterior inclination characteristics have better wear performance. The results of the study have a reference for knee prosthesis design and wear performance assessment.

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