The effect of lateral wedge insoles with different stiffness on knee adduction moment

VernacularTitle:不同硬度楔形鞋垫对膝关节内翻力矩的影响
Author: Ming LI ¹ ; An-Min LIU ; Fang WANG ; Richard JONES ; Dan WANG
Author Information

1. 上海交通大学附属第一人民医院创伤骨科
Keywords: Osteoarthritis; Knee adduction moment (KAM); Stiffness; Lateral wedge insole; Gait analysis
From: Journal of Medical Biomechanics 2017;32(6):524-528
CountryChina
Language:Chinese
Abstract: Objective To study the effect of lateral wedge insoles with different stiffness on the knee adduction moment (KAM) under walking condition.Methods The gait of 15 healthy males wearing lateral wedge insoles with different stiffness was tested.The kinetics and kinematics data were collected by optical motion capture system and ground reaction force platform.The KAM and its peak values were calculated by Visual 3D software.The differences in peak KAM under 3 walking conditions (shoes only,shoes with softer or harder lateral wedge insoles) were analyzed.Results Compared with walking with the softer lateral wedge insoles,walking with the harder lateral wedge insoles could reduce the 1st and 2nd peak KAM by 9.3％ and 9.7％,respectively,with significant statistic differences.Conclusions Increasing some stiffness of lateral wedge insoles can further reduce the pressure and wear on medial compartment of the knee joint,which may relieve the symptom of knee osteoarthritis.