基于新型骨骼肌肉模型的肌肉力及损伤股骨复位力分析  

Analysis on muscle force and injured femoral reduction force based on new muscle tendon model

作　　者：翟宇毅[1] 于琳 陈冬冬 崔泽[1] 雷静桃[1] ZHAI Yuyi;YU Lin;CHEN Dongdong;CUI Ze;LEI Jingtao(School of Mechatronic Engineering and Automation,Shanghai University,Shanghai 200444,P.R.China)

机构地区：[1]上海大学机电工程与自动化学院,上海200444

出　　处：《生物医学工程学杂志》2021年第4期732-741,752,共11页Journal of Biomedical Engineering

基　　金：国家重点研发计划项目(2017YFB1304202)。

摘　　要：机器人骨折复位通常是固定骨折近端,机器人带动骨折远端按照规划的复位路径向近端运动。为提高复位手术的精准性和安全性,有必要了解复位中肌肉力和复位力的变化规律。本文基于骨骼肌组织的肌肉力分析骨折复位力,由Haeufle四元素骨骼肌模型,综合考虑下肢羽状肌的羽状角对肌肉力特性的影响,提出一种股骨骨骼肌肉模型PA-MTM,对比分析不同肌肉模型的骨骼肌的肌肉力。对比仿真分析两种复位路径下的肌肉力及复位力变化情况。结果表明,羽状角越大对肌肉力的影响越大;股骨骨折复位,轴向牵引力最大且股二头肌短头起主要作用,轴向牵引力最大值为472.18 N,复位合力最大值为497.28 N,验证了新型骨骼肌肉模型的合理性。Robot-assisted fracture reduction usually involves fixing the proximal end of the fracture and driving the distal end of the fracture to the proximal end in a planned reduction path.In order to improve the accuracy and safety of reduction surgery,it is necessary to know the changing rule of muscle force and reduction force during reduction.Fracture reduction force was analyzed based on the muscle force of femoral.In this paper,a femoral skeletal muscle model named as PA-MTM was presented based on the four elements of skeletal muscle model.With this,pinnate angle of the skeletal muscle was considered,which had an effect on muscle force properties.Here,the muscle force of skeletal muscles in different muscle models was compared and analyzed.The muscle force and the change of the reduction force under different reduction paths were compared and simulated.The results showed that the greater the pinnate angle was,the greater the influence of muscle strength was.The biceps femoris short head played a major role in the femoral fracture reduction;the force in the z direction contributed the majority to the resulting force with maximums of 472.18 N and 497.28 N for z and resultant,respectively,and the rationality of the new musculoskeletal model was verified.

关 键 词：损伤股骨 骨骼肌肉模型 肌肉力 复位力 

分 类 号：R318.01[医药卫生—生物医学工程] R683.42[医药卫生—基础医学]