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Modélisation géométrique et mécanique du complexe musculo-squelettique du rachis cervical sous facteur de charge

Abstract : Technical advances in the military aeronautical field have contributed to the development of fighter planes reaching high acceleration levels (9 Gz for the Rafale). Acute and chronic injuries of the neck occur because of these accelerations and the injury thresholds of fighter pilots are becoming a relevant issue. In order to ensure the protection of the crews, the Institut de Recherche Biomédicale des Armées (IRBA) coordinates a research program with the support of the Délégation Générale à l'Armement (DGA). This program aims at providing a better knowledge of the involved injury mechanisms. Finite element models are useful tools for the analysis of the risks of injury as they enable to quantitatively measure the stresses and strains levels of the tissues. However, there is a lack of models allowing to take both the effects of morphological variability and the muscular tissues into account. The aim of this study is as a result to contribute to improve the knowledge of the injury mechanisms using an approach based on parametric and subject-specific modelling. This method consists in the automatic generation of hexahedral meshes of the musculoskeletal cervical spine from medical images. Mechanical laws are added to theses meshes to built finite elements models. The segmental motions of the spine are validated in a first step. A preliminary study is then performed to demonstrate the influence of morphology and muscles in the case of an axial compression loading as it often occurs under G-loading.
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https://pastel.archives-ouvertes.fr/pastel-00553250
Contributor : Aurélien Laville <>
Submitted on : Thursday, January 6, 2011 - 9:15:24 PM
Last modification on : Monday, October 19, 2020 - 11:11:03 AM
Long-term archiving on: : Thursday, April 7, 2011 - 2:35:44 AM

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  • HAL Id : pastel-00553250, version 1

Citation

Aurélien Laville. Modélisation géométrique et mécanique du complexe musculo-squelettique du rachis cervical sous facteur de charge. Biomécanique [physics.med-ph]. Arts et Métiers ParisTech, 2010. Français. ⟨NNT : 2010-ENAM-0055⟩. ⟨pastel-00553250⟩

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