Individual Stress Analysis of Bone Tissue using Small Scale FE Model with Anisotropic Material Properties

点击翻译按钮获取中文摘要

Patient-specific simulation with Finite Element (FE) method is a significant technique to examine biomechanical characteristics of bones. In order to improve the analytical performance, we have studied an individual FE analysis method with a consideration of structural anisotropy of bone tissue. Firstly we extract the structural anisotropy of cortical bone from microfocus X-ray CT images. The extracted image clearly illustrates Haversian and Volkmann's canals that causes the structural anisotropy of the cortical bones. Next we compute anisotropy factors based on the images. The factors indicate three dimensional stiffness distributions. Finally we perform FE analyses using the anisotropic material properties based on the factors. The analytical results suggest the importance of the material anisotropy in stress analyses of bone tissue.