J023012 電気的筋収縮法による骨形成促進 : 骨ひずみ分布解析による効果の検証

抄録

The objective of this study is to verify the osteogenic effect of electrically-induced muscle contraction by analyzing the strain values and distribution in the femoral neck region using the finite element method (FEM). Based on micro CT images and anatomical information, we built a FE model of rat femur and set the boundary conditions with external loads by the rectus femoris, vastus intermedius, vastus lateralis, and vastus medialis, and constrained points by the lateral collateral ligament, medial collateral ligament, anterior cruciate ligament, and posterior cruciate ligament. As a result, the maximum compression strain of 173x10^<-6> has been shown in the femoral neck. The value seems not to be large enough to effectively promote bone formation, suggesting necessary modifications of stimulation regimen for successful implementation.