702 運動時における生体踵骨の力学的健全性評価について

概要

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It is known that patient of osteoporosis is increasing with greater age. As the bone becomes less dense, its mechanical properties alter and it is more likely to fracture during the body motion. It is one of the important problems which quantification of the relationship between in vivo bone stiffness and damage. We examined mechanical reliability of heel bone using ultrasonics, that is young's modulus of heel bone was calculated. Waking cycle was measured using force plate, then stress subjected of heel bone was analyzed by finite element method with bone area ratio (B.A.R) of heel bone. The results show that mechanical reliability of heel bone (B.A.R33%) is sufficient during normal walking (1.4m/s) because the calculated Mises stress was under the fracture damage stress of a wet bone.
一般社団法人日本機械学会の論文
2000-07-31