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標題: Evaluating the accuracy of wear formulae for acetabular cup liners
作者: Wu, J.S.S.
Hsu, S.L.
Chen, J.H.
關鍵字: Indentation;Wear;Volume;UHMWPE;Total hip replacement;total hip-arthroplasty;in-vivo determination;polyethylene wear;osteolysis;replacement;components;mechanism;sockets;debris;volume
Project: Medical & Biological Engineering & Computing
期刊/報告no:: Medical & Biological Engineering & Computing, Volume 48, Issue 2, Page(s) 157-165.
This study proposes two methods for exploring the wear volume of a worn liner. The first method is a numerical method, in which SolidWorks(A (R)) software is used to create models of the worn out regions of liners at various wear directions and depths. The second method is an experimental one, in which a machining center is used to mill polyoxymethylene to manufacture worn and unworn liner models, then the volumes of the models are measured. The results show that the SolidWorks(A (R)) software is a good tool for presenting the wear pattern and volume of a worn liner. The formula provided by Ilchmann is the most suitable for computing liner volume loss, but is not accurate enough. This study suggests that a more accurate wear formula is required. This is crucial for accurate evaluation of the performance of hip components implanted in patients, as well as for designing new hip components.
ISSN: 0140-0118
DOI: 10.1007/s11517-009-0535-z
Appears in Collections:機械工程學系所

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