利用步态分析研究楔形鞋垫对膝关节载荷的影响

Effects of wedged insoles on knee joint loading using gait analysis

目的研究足底不同位置的楔形鞋垫对膝关节承载及运动特征的影响。方法利用三维动捕捉系统与测力台对10名健康成年女性受试者步态中的关节动力学变化特点进行分析研究。实验状态分为对照组和6组楔形鞋垫测试组。利用单因素方差分析评价楔形足底支撑对膝关节动力学参数的影响。结果相对于对照组,前内侧楔形鞋垫组显著减小了膝内翻力矩第1峰值(P<0.05);使用前外侧楔形鞋垫和外侧全长楔形鞋垫的两组显著减小了膝内翻力矩第2峰值(P<0.05,P<0.05)。结论使用楔形鞋垫可有效地减小站立相的膝关节内翻力矩,这将有助于设计适合的鞋垫以减轻由骨性关节炎所带来的疼痛。

Objective To study the effects of wedged insoles at different location on loads and motion of the knee joint.Methods Ten healthy female subjects participated in this experiment.Their gait patterns were assessed as six different wedged insoles and one controlled flat insole.The gait was monitored to study the kinetic changes in joint by using Motion Analysis System and force platforms.One way repeated measurement ANOVA was used to analyze the influences.Results Compared with the control group,the first peak of knee adduction moment was significant reduced by using medial forefoot wedged insole（P0.05）.The second peak of knee adduction moment was significantly reduced by both lateral forefoot wedged insole（P0.05） and full-length lateral wedged insole（P0.05）.Conclusions The wedged insoles can effectively decrease the knee adduction moment in stance phase during walking,which will help to design an appropriate insole to reduce the knee pain due to osteoarthritis.