Abstract

Cortical bone is a damageable elastic orthotropic material due to the orientation of its components at different scales. Thus, to consistently describe its mechanical behavior, it is necessary first to experimentally identify the anisotropy directions and second to be able to implement them in a numerical model. In our previous paper, we presented an original approach which enables one to get the numerical directions of orthotropy throughout a whole femur. In the present paper, we propose a significant improvement of such a computational approach in order to depict specific orientations in the femoral diaphysis. To do so, a correction of the main orientation of the Haversian canals has been applied based on experimental measurements. The influence of such a correction on the global distribution of the stresses has been quantified via two finite element applications which simulate pure torsion and flexion-compression. Our main objective is to provide the numerical tools to describe the orthotropic behavior of the cortical bone for any femur.

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