Abstract
An analytical model based on the mechanics of solids was developed to estimate the stress distribution at the external surface of human femur medial cross sections, as an alternative to more expensive finite element approach. It recognizes cortical and trabecular bone tissues and proposes circular and elliptical geometries to represent real bone cross sections. Its implementation was accomplished through the utilization of a representative load case, with muscles forces and one joint reaction force. The analytical model results comprise normal and shear stresses at external cortical bone cross sections, as well as principal stresses and angles. These results were compared with a commercial F.E. program with good matches.
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