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EXPERIMENTAL STUDY ON THE BEHAVIOR AND LOAD-BEARING CAPACITY OF THE PATELLOFEMORAL JOINT USING A SIMULATED KNEE JOINT

模拟膝关节对髌股关节行为和承载能力的实验研究

基本信息

批准号：
02650186
负责人：
HIROKAWA Shunji
金额：
$ 1.22万
依托单位：
KYUSHU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1990
资助国家：
日本
起止时间：
1990 至 1992
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02650186/
关键词：
Simulated knee Patellofemoral contact pressure Three-dimensional movement of the patella Antagonistic muscle contraction of the thigh Knee flexion angle,Gait 膝蓋骨の3次元運動歩行動作シミュレ-ト膝

项目摘要

In an early stage of this study, some measurements were performed subject to the cadaver knees with respect to morphology,structure and dimension.A mathematical model was also made and simulation analysis was performed to investigate a biomechanical behavior and load bearing capacity of the patellofemoral joint.A series of the study brought up not only useful data for designing a simulated knee but significant results on knee joint biomechanics. The following are the selections of the experimental results using the designed simulated-knee.The influence of both insertion and strength/elasticity of each extensor in patellofemoral disorders was fully investigated,obtaining the significant results for operative procedures in patellofemoral disorders.Some useful parameters that serve as a function of knee flexion angle were also introduced: contact force and slipping ratio of the patellofemoral joints.The variation of patellofemoral joint contact pressure was measured under the condition of simulating the variations of knee flexion angle and the thigh muscle forces during level walking and climbing and descending stairs,and the results were compared with those of the previous experimental studies in which the thigh muscle forces had been kept constant.The patellofemoral contact stress shows almost constant all the time of the stance phase of a gait cycle and also the peak values of stress are almost equal among specimens.The experimental results revealed that the contact portion where larger contact force occurs produces a smaller curvature.

本研究通过对尸体膝关节的形态、结构和尺寸进行测量，建立数学模型并进行仿真分析，研究髌股关节的生物力学行为和承载能力，为设计模拟膝关节提供了有用的数据，并获得了有意义的膝关节生物力学结果。以下是使用设计的模拟膝关节的实验结果的选择。充分研究了髌股关节疾病中每个伸肌的插入和强度/弹性的影响，获得了髌股关节疾病手术方法的重要结果。还介绍了作为膝关节屈曲角度的函数的一些有用参数：髌股关节的接触压力和滑动率，在模拟水平行走和上下楼梯时膝关节屈曲角度和大腿肌肉力量变化的条件下，测量髌股关节接触压力的变化，结果表明，髌股关节接触应力在步态周期的站立期几乎保持恒定，且各试件间的应力峰值基本相等，接触力较大的接触部位产生的应力峰值较小，而接触力较大的接触部位产生的应力峰值较小，接触力较大的接触部位产生的应力峰值较小，接触力较大的接触部位产生的应力峰值较小，接触力较大的接触部位产生的应力峰值较小曲率