Author(s)

M. Tanakao, Y. Kannen, M. Inoue & A. Maeda

Abstract

Model-based identification of variable response of anterior cruciate ligament: effects of knee flexion, valgus-varus rotation and stretching direction M. Tanakao, Y. Kannen", M. Inoue& & A. Maeda& "Department of Mechanical Engineering, Osaka University, Toyonaka, Osaka 560, Japan ^Department of Orthopaedic Surgery, Osaka University, Toyonaka, Osaka 560, Japan ABSTRACT The anterior cruciate ligament is a frequently ruptured knee ligament. The past attentions of ligament mechanics have been mainly paid for the prop- erties as the entire ligament or subunit, although its mechanical response is not uniform. This study employs the computational biomechanics approach to investigate the variable response of the anterior cruciate ligament. The ligament-bone unit is modeled as the collection of the tissue fascicles of various lengths. Then, the model-based identification is extensively used to probe the effect of the knee flexion, the valgus-varus rotation and th

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