画像解析による骨粱構造の定暈化とそれを用いる骨周囲の力学的環境の逆解析

概要

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The trabecular system is a useful source of knowledge for the mechanical environment of bone, which is important in orthopedic treatment. This study proposes a method for the estimation of loading conditions on bone structures, by using bone data and FEM analysis. In this paper, the loads on the femoral head are estimated based on two measures. One measure is the difference between distributions of equivalent stress and apparent density, and the other measure is those between principal direction and traveling direction of trabeculae. Equivalent stress and principal direction are calculated by the finite-element method, and apparent density and traveling directions of trabeculae are estimated using the image processing technique. It is found from the results of both methods that the loads on the femoral head in the frontal plane are similar to those which are estimated from Pauwels' theory. This result shows that trabeculae have functional adaptability, and unknown loads applied to bone may be estimated using the inverse finite-element mothod.
一般社団法人日本機械学会の論文
1995-05-25