腰部物理モデル開発のための前後屈姿勢X線画像による負担解析

抄録

Low back pain is a serious problem in Japan, so analysis of lumber load is needed. The conventional analysis method is an invasive analysis, and a non-invasive and safe analysis method is required. The purpose of this study is to make a physical model of L4-L5 vertebral body from radiographs and to estimate the lumbar load from the model. Five X-ray images of the upper body angle, standing postures, and backward bending were taken for each subject, and a three-dimensional model of the L4-L5 vertebral body was created. FEM analysis was performed using the model created, and the load acting on the intervertebral disc during the photographed postures ware measured. The results were evaluated for each of the four subjects to measure individual differences. Based on these results, we approached the lumbar load analysis using a physical model, which is the goal of this study.