Kakihana Wataru, Akai Masami, Yamasaki Nobuya, Takashima Takamichi, Nakazawa Kimitaka
Department of Rehabilitation for Movement Functions, National Rehabilitation Center for Persons with Disabilities, Namiki, Tokorozawa, Japan.
Am J Phys Med Rehabil. 2004 Apr;83(4):273-8. doi: 10.1097/01.phm.0000118035.71195.de.
The purpose of this study was to assess the kinematic and kinetic effects of wearing a laterally wedged insole on the knee joint moment during gait, specifically in the frontal plane, in normal healthy adults.
Motion analyses were conducted with (1) a three-dimensional motion analysis system and (2) ground reaction force analysis using force platforms when subjects walked under three different insole conditions: no wedge, a low wedge with a 3-degree lateral angle, and a high wedge with a 6-degree lateral angle.
The high-wedge insole significantly reduced the knee joint varus moment during gait compared with the gait with the no-wedge insole. The actual segment angles at the subtalar and knee joints did not show any changes due to insole conditions. In contrast, the subtalar joint valgus moment increased for the high-wedge insole. This finding was correlated with a greater moment arm of the subtalar joint valgus moment with the high-wedge insole.
These results indicate that, under dynamic conditions, the subjects wearing laterally wedged insoles had both changes of moments at the subtalar and knee joints via the more laterally shifted location of the center of pressure.
本研究旨在评估在正常健康成年人中，穿着外侧楔形鞋垫对步态期间膝关节力矩的运动学和动力学影响，特别是在额状面内的影响。
当受试者在三种不同的鞋垫条件下行走时，使用（1）三维运动分析系统和（2）力平台进行地面反作用力分析，这三种条件分别是：无楔形鞋垫、外侧角度为3度的低楔形鞋垫和外侧角度为6度的高楔形鞋垫。
与穿着无楔形鞋垫的步态相比，高楔形鞋垫在步态期间显著降低了膝关节内翻力矩。由于鞋垫条件的不同，距下关节和膝关节处的实际节段角度未显示出任何变化。相比之下，高楔形鞋垫使距下关节外翻力矩增加。这一发现与高楔形鞋垫使距下关节外翻力矩的力臂更大有关。
这些结果表明，在动态条件下，穿着外侧楔形鞋垫的受试者通过压力中心更向外侧移动的位置，使距下关节和膝关节的力矩都发生了变化。
