Title: Design effect on the mechanical response of Total Knee Replacement under high-compression loading

Authors: Hajer Ketata, Abdelkader Krichen, Maher Dammak, Aref Maalej

Addresses: Institut Preparatoire aux Etudes d'Ingenieurs de Bizerte, Laboratoire des Systemes Electromecaniques, Ecole Nationale d'Ingenieurs de Sfax (ENIS), B.P. 805, 3018, Sfax, Tunisia. ' Departement de Genie des Materiaux, Unite de recherche de Genie de Production Mecanique et Materiaux, Ecole Nationale d'Ingenieurs de Sfax, Tunisia. ' Institut Preparatoire aux Etudes d'Ingenieurs de Sfax, Laboratoire des Systemes Electromecaniques, Ecole Nationale d'Ingenieurs de Sfax, Tunisia. ' Laboratoire des Systemes Electromecaniques, Ecole Nationale d'Ingenieurs de Sfax, Tunisia

Abstract: This study was investigated to analyse the design effects of Total Knee Replacement on the response of tibiofemoral contact. Two prosthesis design and a parametric study (spherical cap on curved polyethylene specimen) were considered to investigate conformity and thickness effect. Three- and two-dimensional Finite Element (FE) models were developed. The investigation was to quantitatively analyse load, displacement, contact stiffness and area and stress. Comparison of the two prostheses and their corresponding elementary configurations showed that the two-dimensional FE model could be sufficient to predict the load-displacement relationships of the two prostheses and the contact area of the low conformity prosthesis.

Keywords: TKR; total knee replacement; finite element analysis; FEA; compression loading; tibiofemoral contact; conformity; thickness; prosthesis design; modelling; load; displacement; contact stiffness; stress.

DOI: 10.1504/IJBET.2010.034279

International Journal of Biomedical Engineering and Technology, 2010 Vol.4 No.1, pp.65 - 77

Published online: 31 Jul 2010 *

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