模拟上肢截肢者走跑步态特征研究

关键词：模拟 上肢截肢者 补偿运动 步态 三维 运动特征

Keywords:simulation  upper extremity amputee  gait  3-D movement  basic movement characteristic

摘要：

      目的：探讨上肢截肢者基本运动的步态特征与正常人步态特征的差异，进一步阐明上肢运动在人体基本运动中的作用机制。方法：实验中采用Motion analysis system红外自动跟踪捕捉系统和Kistler Force Plate进行同步运动学和动力学测试。通过对正常人的手臂进行限制约束，对上肢截肢者进行模拟实验。结果：通过对手臂约束前后对比分析发现约束前后部分步态参数存在显著差异。结论：在行走时步态参数差异较小，跑动时差异较显著；补偿运动主要发生在躯干、骨盆、摆动腿；慢走时摆臂有利于增大垂直方向的作用力，快跑时没有手臂的摆动在脚着地时向后的阻力增大。

Abstract:

      Objective:To investigate the difference of basic movement gait character between normal person and upper extremity amputee,more to clarify the function principles of upper limb movement during normal human body movement procedure.Method:Motion analysis system and Kistler Force Plate were applied to measure synchronizing data of kinematics and kinetics in the experiment.This experiment simulated upper extremity amputee by restricting arms of normal person.Result:Some of the gait parameter is evidently difference between normal person and upper extremity amputee.Conclusion:Walking step parameter between normal person and arm restrained person has no statistical different,but running contrary;Movement compensation occurs mainly on upper trunk,pelvis,and swing leg.Swing arms can enhance the pressure in vertical aspect when slow walking,resistance increase at the point of the heel touchdown if no arms swing when fast run.