Bone Anisotropy - Analytical and Finite Element Analysis

Abstract A human femur model, submitted to static loads, is analyzed through the utilization of three material constitutive relationships, namely: isotropic, transversally isotropic and orthotropic. The influence of bone anisotropy with respect to principal stress/strain distribution on human femur external surface was accessed through the use of analytical and finite element approaches. The models results show that the principal angles at a medial path bone surface have a good correlation with human femur bone lamellae angles.

摘要：针对承受静态载荷的人类股骨模型，本文采用各向同性（isotropic）、横观各向同性（transversally isotropic）与正交各向异性（orthotropic）三种材料本构关系开展分析。通过解析法与有限元法，评估骨各向异性对人类股骨外表面主应力/主应变分布的影响。模型结果显示，内侧路径骨表面的主方向角与人类股骨骨板角度存在良好的相关性。