J0204-2-6 PS型人工膝関節の応力状態に及ぼす屈曲の影響([J0204-2]バイオトライボロジー(2))

概要

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A virtual knee simulator which is a computational model of experimental knee simulator has been developed by using the finite element method. The simulator consists of a knee joint model constructed from CT and MRI images, a PS type knee prosthesis model and mechanical parts. Body force of 300 N and a time-dependent tension forces were applied to the pelvis, the quadriceps femoris muscle and the hamstrings, respectively. Finite element analysis of the model was then performed and a high knee flexional motion with the maximum flexional angle of 125 deg was successfully produced. However, excess translation of patella still existed. Therefore, the tension force of the quadriceps femoris muscle and the Young's modulus of the patella tendon and the quadriceps femoris were adjusted to obtain a reasonable movement of patella. As a result, the behavior of the patellofemoral joint was improved and the maximum flexion angle of the knee joint was increased up to 140 deg.
一般社団法人日本機械学会の論文
2010-09-04