摘要
基于美国BRG公司的运动及动力学仿真分析软件LifeMOD,建立包括股骨、胫骨、腓骨、4条主要韧带及肌肉在内的较完整的膝关节动力学模型,并用该模型模拟了人体下肢在平地行走时膝关节的动力学行为以及前交叉韧带缺损对膝关节接触力大小的影响。通过动力学分析,得到人体在平地行走时,胫股关节之间最大的接触力值为2645N,最大韧带张力为590N,发生在内侧副韧带上;当胫股关节之间的滑动受到限制时,最大的韧带张力发生在前交叉韧带上,为560N,研究结果与文献较接近。通过动力学模拟,可以得出结论:胫股关节之间的滑动对韧带张力有较大影响;前交叉韧带缺损使得胫股关节之间的接触力变小。
Based on the kinematic and dynamic simulation software LifeMOD （ BRG Corp. ）, the human knee joint model including femur, tibia, fibula, patella, four main ligaments and muscles was systematically established and used to simulate the dynamic response of the human normal gait in level walking and the influence of the deficiency of anterior cruciate ligament （ACL） on the knee joint contact forces. The dynamic simulation indicates that the maximum contact force is about 2645N and the maximum ligament tensile force is about 590N, which occurs on the medial collateral ligament （ MCL）. When the slide between tibia-femoral joint is restricted, the maximum tensile force of ligaments goes to ACL, about 560 N. Our results are consistent with literature. The slide between tibia-femoral joint have some influence on ligament tensile force. The contact force between tibia-femoral joint decrease slightly due to the deficiency of ACL.
出处
《中国生物医学工程学报》
CAS
CSCD
北大核心
2008年第1期56-60,共5页
Chinese Journal of Biomedical Engineering
基金
国家自然科学基金资助项目(10402007
14021202)
