Finite element prediction of contact pressures in cam-type femoroacetabular impingement with varied alpha angles

Qian Liu, Wanchun Wang, Andrew R. Thoreson, Chunfeng Zhao, Weihong Zhu and Pengcheng Dou

Computer Methods in Biomechanics and Biomedical Engineering, 2017, vol. 20, issue 3, 294-301

Abstract: Three dimensional finite element models of cam-type FAI with alpha angles of 60°, 70°, 80°, and 90° were created to investigate the cartilage contact mechanics in daily activities. Intra-articular cartilage contact pressures during routine daily activities were assessed and cross-compared with a normal control hip. Alpha angles and hip range of motion were found to have a combined influence on the cartilage contact mechanics in hips with cam-type FAI, thereby resulting in abnormally high pressures and driving the cartilage damage. In particular, alpha angles of 80° or greater contribute to substantial pressure increase under certain types of daily activities.

Date: 2017
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DOI: 10.1080/10255842.2016.1224861

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