20901 筋骨格モデルによる人膝前十字靱帯の変形解析(OS9 バイオエンジニアリング(1),オーガナイズドセッション)

Abstract

In this study, we propose a musculoskeletal model that can investigate the mechanical properties of the ACL (Anterior Cruciate Ligament) as a function of knee flexion angle. The knee joint in the model is more detailed modeling introducing the contact conditions of the knee joint surfaces, i.e. the knee joint surfaces are capable of the relative motion such a sliding and rolling during flexion or extension The inverse dynamic analysis was used to investigate the ACL mechanical properties under the influence of muscle recruitments. As the results of the analysis, ACL length decreases with increasing flexion angle and, at less than 30°, ACL tension rapidly increases with increasing flexion angle, subsequently tension decreases. For the future, we need to improve the modelling by introducing patella and mimic viscoelasticity characteristics.