抄録
Mechanical property of bone is inhomogeneous especially between cortical and cancellous bone, and it also varies individual. So mechanical analysis considering inhomogeneous property of bone is necessary for patients oriented evaluation of bone in clinic. If the finite element method is used, mechanical analysis considering the bone inhomogenity is possible by giving a material property to an element one by one. So that, extreme fine meshing of finite elements is required. In this study, we improved the "ADVENTURE system", which had developed as a large-scale finite element analysis system, to be applicable to stress analysis of inhomogeneous bone problems. We applied the improved program to a composite beam model with graded material property and ensured its validity by comparing between the theoretical and calculated results. Furthermore, it was applied to stress analysis of proximal femur based on CT images and its efficiency was discussed.
