μ−CT画像を利用した海綿骨モデルの作製と力学特性の評価

抄録

Osteoporosis of elder people has been one of the primary clinical orthopedic problems in Japan. Deformation and fracture behavior of osteoporotic cancellous bones must be clarified in order to understand the mechanism of bone fracture due to osteoporosis. In the present study, micro-CT images of real femoral head of an elder patient were used to fabricate cancellous bone plastic models using 3D-printing technique and furthermore, to construct a finite element model of the cancellous bone. Compressive mechanical tests of the plastic 3D models and the FE model were conducted and the stress-strain relations obtained from the different tests were compared. It was found that the FEA with micro-CT images can predict the experimental behavior very well.