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Lubricants 2014, 2(4), 193-205;

Development and Validation of a Wear Model to Predict Polyethylene Wear in a Total Knee Arthroplasty: A Finite Element Analysis

BEAMS Department (Bio Electro and Mechanical Systems), Université Libre de Bruxelles, Avenue Roosevelt 50, 1050 Bruxelles, Belgium
KU Leuven, Mechanical Engineering Technology TC, Kleinhoefstraat 4, 2440 GEEL, Belgium
Smith & Nephew Orthopaedics Ltd. Aurora House, Harrison Way, Leamington Spa, CV31 3HL, UK
IRCCS Istituto Ortopedico Galeazzi, via R. Galeazzi 4, 20161 Milano, Italy
Author to whom correspondence should be addressed.
Received: 21 August 2014 / Revised: 17 October 2014 / Accepted: 27 October 2014 / Published: 18 November 2014
(This article belongs to the Special Issue Tribological Performance of Artificial Joints)
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Ultra-high molecular weight polyethylene (UHMWPE) wear in total knee arthroplasty (TKA) components is one of the main reasons of the failure of implants and the consequent necessity of a revision procedure. Experimental wear tests are commonly used to quantify polyethylene wear in an implant, but these procedures are quite expensive and time consuming. On the other hand, numerical models could be used to predict the results of a wear test in less time with less cost. This requires, however, that such a model is not only available, but also validated. Therefore, the aim of this study is to develop and validate a finite element methodology to be used for predicting polyethylene wear in TKAs. Initially, the wear model was calibrated using the results of an experimental roll-on-plane wear test. Afterwards, the developed wear model was applied to predict patello-femoral wear. Finally, the numerical model was validated by comparing the numerically-predicted wear, with experimental results achieving good agreement. View Full-Text
Keywords: wear; TKA; validated model; FEA; patello-femoral joint wear; TKA; validated model; FEA; patello-femoral joint

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Innocenti, B.; Labey, L.; Kamali, A.; Pascale, W.; Pianigiani, S. Development and Validation of a Wear Model to Predict Polyethylene Wear in a Total Knee Arthroplasty: A Finite Element Analysis. Lubricants 2014, 2, 193-205.

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