Subject-specific geometry affects acetabular contact pressure during gait more than subject-specific loading patterns

Mariska Wesseling, Sam Van Rossom, Ilse Jonkers and Corinne R. Henak

Computer Methods in Biomechanics and Biomedical Engineering, 2019, vol. 22, issue 16, 1323-1333

Abstract: Finite element modeling (FEM) can predict hip cartilage contact mechanics. This study investigated how subject-specific boundary conditions and joint geometry affect acetabular cartilage contact mechanics using a multi-scale workflow. For two healthy subjects, musculoskeletal models calculated subject-specific hip kinematics and loading, which were used as boundary conditions for FEM. Cartilage contact mechanics were predicted using either generic or subject-specific FEM and boundary conditions. A subject-specific mesh resulted in a more lateral contact. Effects of subject-specific boundary conditions varied between both subjects. Results highlight the complex interplay between loading and kinematics and their effect on cartilage contact mechanics.

Date: 2019
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DOI: 10.1080/10255842.2019.1661393

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