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Modélisation biomécanique des système musculo-squelettique sous déterminés. Analyse statique des tensions des tendons mobilisant le doigt

Abstract : The modelling of the mechanical behaviour of the musculo-skeletal system is of a great interest in biomechanics, rehabilitation and physiology. This requires the estimation of variables which can not be directly assessed like the muscular moments and forces. These variables can be estimated thanks to biomechanical models which require the formulation of assumptions and the recording of peripheral data. However, the musculo-skeletal system is redundant since each degree of freedom is controlled by several actuators (muscles) as well agonists as antagonistic. The use of the biomechanical modelling of the muscular systems and the numerical optimization enabled us to solve this problem of redundancy. Particularly in this work, we developed techniques of modelling and experimentation allowing the analysis of the tensions of the finger tendons in various situations of request. This enabled us to show that the amplitude of the non-muscular passive moments can not be neglected in the procedures of calculation. Moreover, we also used EMG in the form of inequality constraints in the procedures of optimization. This work made it possible to highlight new results concerning the distribution of the tensions in the tendons agonists and antagonists. Various adaptations of the model are discussed in the document, the substitution of the invasive EMG by surface EMG being the principal research orientation.
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https://tel.archives-ouvertes.fr/tel-00011464
Contributor : Laurent Vigouroux <>
Submitted on : Wednesday, January 25, 2006 - 5:47:02 PM
Last modification on : Friday, November 6, 2020 - 3:45:39 AM
Long-term archiving on: : Tuesday, April 6, 2010 - 4:41:11 PM

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  • HAL Id : tel-00011464, version 1

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Laurent Vigouroux. Modélisation biomécanique des système musculo-squelettique sous déterminés. Analyse statique des tensions des tendons mobilisant le doigt. Sciences du Vivant [q-bio]. Université Joseph-Fourier - Grenoble I, 2005. Français. ⟨tel-00011464⟩

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