Caractérisation ultrasonore et vibroacoustique
de la santé mécanique des os humains

Abstract : The human bone is both a material (bone tissue) and a structure (e.g. the femur). Trauma often generates structural failure (fractures) of the bone, but it?s mechanical integrity can also be affected in an insidious manner, and not the less dangerous, by certain diseases. Very schematically, one can say that trauma is the cause of macrofractures (to the bone structure), and diseases cause of microfractures if no treatment (of the bone material) is undertaken. The microfractures develop gradually into macrofractures, or if the treatment is not effective, the bone loses its function of support. This thesis relates primarily to one of the diseases of bone : osteoporosis. To treat this disease, and/or to prevent the macrofractures of which it is in the long term the cause, it is initially necessary to make its diagnosis. This problem is complicated owing to the fact that it is about characterization (primarily mechanical) of living material (biological tissue) and that it is imperative that the probe be of nondestructive type, especially if the examination must be repeated often (in particular to follow the progress of a treatment). The work of this thesis thus relates to the development of new methods, and/or improvement of more older methods relating to the nondestructive evaluation (NDE) mechanical deteriorations of bone tissue in connection with osteoporosis. As the NDE is also a term employed for the characterization of inert material, the applicability of this work?s framework exceeds that of living tissue.
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Submitted on : Thursday, January 1, 2009 - 6:34:44 PM
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  • HAL Id : tel-00349558, version 1

Citation

Erick Ogam. Caractérisation ultrasonore et vibroacoustique
de la santé mécanique des os humains. Mécanique [physics.med-ph]. Université de Provence - Aix-Marseille I, 2007. Français. ⟨tel-00349558⟩

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