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Methodology to incorporate non-isotropic bone properties in a finite element model

Abstract:

Most of the finite element models found in the literature assumes that the mechanical behavior of the bone tissue is isotropic. In order to produce more accurate models, this study proposes the incorporation of transversally isotropic material properties. An analysis of the model's sensibility to the orientation of the material's properties, using three different material types and three load cases is presented. The results show that the local reference systems converge to the principal stress directions in one step, and this behavior is independent of its initial orientation. The strain is the more sensitive parameter to the variation of the orientation of the material's properties, and this behavior is independent of the direction of the load.