Abstract
A three dimensional anatomic model of a human hip joint was created from CT scans and also two and three dimensional simple axisymmetric models of head-and-neck region of a natural hip joint were created by using finite element method. A comparison of the contact mechanics between articular cartilages of femur and pelvis, and stress distribution on bone were investigated for all models considered in this study. Finite element analyses of different models showed while the contact mechanics studies of simplified axisymmetric models have similar results compared to realistic anatomic model, the stress distribution studies have significant differences for different finite element models. Therefore, it is concluded that using of three dimensional anatomic finite element models to investigate the stress distribution of bone will give more realistic results than simple axisymmetric models. However, for the contact mechanics studies, all considered models showed good agreement in this study. Therefore it can be concluded that the axisymmetric finite element models can be used for contact mechanics studies and especially for comparative parametric studies because of their simple geometry and short computation time.
Published Version
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