Computational model of wear mechanisms for total hip joint replacement

Nandang Suhendra

    Research output: ThesisDoctoral Thesis

    22 Downloads (Pure)

    Abstract

    [Truncated] This thesis presents a study of wear mechanisms for total hip replacements (THRs) utilizing both the finite element method (FEM) and laboratory experiment. The hip prosthesis studied consists of an ultra-high molecular weight polyethylene (UHMWPE) acetabular cup articulating against a cobalt-chromium (CoCr) alloy femoral head. According to the geometrical scale, the FEM models developed can be divided into two categories, the first deals with a macro-scale whilst the second treats a micro-scale (asperity) geometry model.

    The macro-scale FEM model aims to analyse various aspects of the prosthesis, for instance, bulk material, surface stress and temperature rise under variable conditions of elastic modulus, friction coefficient, sliding speed and radial clearance. In this analysis, apart from the CoCr alloy head, an alumina femoral head model is also included in the FEM analysis. The results obtained from the model are useful in understanding the operating conditions and the causes of wear within THRs.
    Original languageEnglish
    QualificationDoctor of Philosophy
    Awarding Institution
    • The University of Western Australia
    DOIs
    Publication statusUnpublished - 2005

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