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Elaboration d'un modèle mécanique de l'articulation de la hanche sous sollicitations dynamiques – Application à l'étude de l'influence d'une orthèse podale sur une hanche arthrosique

Abstract : The aim of this study is to elaborate a mechanical model of the healthy hip joint. The main objective is to use it as a reference model in order to analyse pathological hip joint mechanical behaviours and evaluate prescribed treatment by comparison of pre vs. post simulated behaviours. Therefore, a generic finite element model of the hip joint is developed. Experimental acquisitions of kinematical and kinetic data are implemented in a musculo-skeletal model to calculate muscular forces acting at the hip joint. Our approach consists in coupling an inverse dynamic method with static optimisation. From the evaluation of each individual hip muscle force, the contact reaction force is computed. The contact reaction force is then implemented in the finite element model in order to perform simulations for several instants of the stance phase of gait and stair climbing. Contact pressure distributions during the stance phase of gait are compared to those available in the literature, measured in vivo by mean of instrumented prosthesis or cadaveric experiments simulating gait cycles. A clinical application concerns the evaluation of the effect of foot orthoses on the mechanical behaviour of an osteoarthritic hip joint. The loading conditions at the hip joint, when the patient is walking or climbing a step successively with and without foot orthoses, is determined in each experimental conditions using the approach previously described.
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https://tel.archives-ouvertes.fr/tel-00261947
Contributor : Audrey Pustoc'H <>
Submitted on : Monday, March 10, 2008 - 3:07:33 PM
Last modification on : Friday, November 13, 2020 - 8:44:12 AM
Long-term archiving on: : Thursday, May 20, 2010 - 8:49:33 PM

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  • HAL Id : tel-00261947, version 1

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Audrey Pustoc'H. Elaboration d'un modèle mécanique de l'articulation de la hanche sous sollicitations dynamiques – Application à l'étude de l'influence d'une orthèse podale sur une hanche arthrosique. Sciences du Vivant [q-bio]. Université Claude Bernard - Lyon I, 2007. Français. ⟨tel-00261947⟩

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