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首页> 外文期刊>Gait & posture >Knee adduction moment and medial knee contact force during gait in older people
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Knee adduction moment and medial knee contact force during gait in older people

机译：老年人步态中的膝盖内收力矩和膝盖内侧接触力

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摘要

External knee adduction moment has been studied as a surrogate for medial knee contact force. However, it is not known whether adduction moment is a rational measure for predicting medial knee contact force. The aim of this study was to investigate the correlation between knee adduction moment and medial knee contact force in older people, using musculo-skeletal simulation analysis. One hundred and twenty-two healthy older subjects participated in this study. Knee moment and medial knee contact force were calculated based on inverse dynamics analysis of normal walking. Muscle force and joint reaction force were used to determine the medial knee contact force during stance phase. The results showed that the maximum medial knee contact force was moderately correlated to the maximum knee adduction (r= 0.59) as well as the maximum extension moment (r= 0.60). The first peak of medial knee contact force had a significant strong correlation with the first peak of adduction moment and a moderate correlation with the maximum flexion moment. The second peak of medial knee contact force had a significant moderate correlation with both the second peak of adduction and the maximum extension moment. These results implied that the maximum adduction moment value could be used, to some extent, as a measure of the maximum medial knee contact force.
机译：已经研究了外部膝盖内收力矩作为内侧膝盖接触力的替代物。但是，尚不知道内收力矩是否是预测内侧膝盖接触力的合理方法。这项研究的目的是使用肌肉骨骼模拟分析来研究老年人膝关节内收力矩与内侧膝关节接触力之间的相关性。一百二十二名健康的老年受试者参加了这项研究。基于正常步行的逆动力学分析，计算膝力矩和内侧膝盖接触力。在站立阶段，使用肌肉力和关节反作用力确定膝盖内侧的接触力。结果表明，最大的内侧膝关节接触力与最大的膝关节内收度（r = 0.59）和最大伸展力矩（r = 0.60）适度相关。膝盖内侧接触力的第一个峰值与内收力矩的第一个峰值具有显着的强相关性，与最大屈曲力矩有中等的相关性。膝盖内侧接触力的第二个峰值与内收第二个峰值和最大伸展力矩都具有显着的中度相关性。这些结果暗示最大内收力矩值可以在某种程度上用作最大内侧膝盖接触力的量度。

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