Prediction of the elastic modulus of the trabecular bone based on X-ray computed tomographyReportar como inadecuado




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* Corresponding author 1 MAT - Centre des Matériaux 2 PRISME - Laboratoire Pluridisciplinaire de Recherche en Ingénierie des Systèmes, Mécanique et Energétique 3 F2ME PRISME - Laboratoire Pluridisciplinaire de Recherche en Ingénierie des Systèmes, Mécanique et Energétique

Abstract : This work aims to estimate the apparent Young-s modulus of real human trabecular bones using a numerical micro-macro approach. Cylindrical specimens of trabecular bone were extracted from human femur heads, cleaned and scanned using a SkyScan-1072 micro-computed tomography system. 3D volumetric tetrahedral grids were generated from the exploitation of the reconstructed images using original meshing techniques. Numerical compressive tests were simulated, assuming isotropic tissue Young-s modulus for all elements. The large size of the volumes implies grids with a high number of nodes, which required the use of a large number of parallel processors in order to perform the finite element calculations. Numerical Young-s moduli varied between 1300 MPa and 1600 MPa, with a good agreement with experiments.

Keywords : Trabecular bone Young-s modulus microCT parallel computing osteoporosis





Autor: Kamel Madi - G. Aufort - A. Gasser - Samuel Forest -

Fuente: https://hal.archives-ouvertes.fr/



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