925 FEM を用いたせきつい分離症発生メカニズムの解析

概要

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Spondylolysis have been considered to be native diseases, such as heredity and fracture by pressure of waist of the embryo at the time of a delivery. However the fatigue fracture by pressure of repetition, that is, spondylolysis has the most leading opinion of being an acquired disease for the present. In this research, a 3-dimensional finite element model of a lumber vertebra using FEM was produced, and analyzed by changing this model. And it examined that what movement form cause spondylolysis. As a result of analysis, the position of a high stress region was in agreement with the separation part of CT image, and it was understood that spondylolysis has the high possibility of an acquired disease. Moreover, it was showed clearly that the stress distribution of back element of the spine is changed with movement forms.
一般社団法人日本機械学会の論文
2003-08-05