X線CT画像を用いた肩関節形状モデリングと関節面応力解析(J06-1 イメージベースト達成バイオメカニクス解析(1),J06 イメージベースト達成バイオメカニクス解析)

概要

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The shoulder joint is surrounded by the rotator cuff, which keeps it stable. When rotator cuff tear occurs, stress distribution on the joint surface will change. Diseased stress situation causes osteoarthritis of the shoulder. Computer simulation is useful to estimate the effect of the operation for rotator cuff tear. In this study, we made three dimensional finite element model of the glenohumeral joint from CT data. Stress distribution on the joint surface was analyzed for normal, rotator cuff tear, and teres minor transfer models. In addition new glenoid components were compared in total shoulder orthroplasty models. As a result, in supraspinatus tear model, the stress distribution was almost same as normal model. In both supraspinatus and infraspinatus tear model, the stress value increased. In teres minor transfer model, the stress distribution approached to normal model. In new glenoid component model, stress distribution on bone-cement interface decreased, but high tensile stress was confirmed on the joint surface.
一般社団法人日本機械学会の論文
2004-09-04