Comprehensive biomechanical analysis of microcosmic trabecular structure of cancellous bone

Femoral cancellous bone has microcosmic trabecular structure and its element characteristics effect the gross mechanical property of the femur. Finding proper cell configuration and its distribution will be of great importance for more effective biomechanical analysis of cancellous bone. A lot of microcosmic trabecular models with different structures were used to study the biomechanical performance of the elements. The biomechanical analysis of the femur model with different trabecular structures and distributions were carried out with the combination of the finite element method and the mechanics experiment of sample part fabricated by rapid prototyping processes. The relation between the trabecular structure and its biomechanical characteristics was obtained. Also, the comparison between the finite element results and the mechanics experiment was worked out. Based on analysis, better microcosmic trabecular structure and its distribution were found and utilized in building an analytic model of the femoral cancellous bone. The optimized microcosmic element structure can be applied to the manufacture of the biological materials effectively.