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Lubricants 2014, 2(4), 193-205; doi:10.3390/lubricants2040193

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

1
BEAMS Department (Bio Electro and Mechanical Systems), Université Libre de Bruxelles, Avenue Roosevelt 50, 1050 Bruxelles, Belgium
2
KU Leuven, Mechanical Engineering Technology TC, Kleinhoefstraat 4, 2440 GEEL, Belgium
3
Smith & Nephew Orthopaedics Ltd. Aurora House, Harrison Way, Leamington Spa, CV31 3HL, UK
4
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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Abstract

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
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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MDPI and ACS Style

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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