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首页> 外文期刊>Journal of Biomechanics >Knee biomechanics of moderate OA patients measured during gait at a self-selected and fast walking speed.
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Knee biomechanics of moderate OA patients measured during gait at a self-selected and fast walking speed.

机译：中度OA患者的步态在步态期间以自行选择的快步行速进行测量。

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Osteoarthritis (OA) is a chronic disorder resulting in degenerative changes to the knee joint. Three-dimensional gait analysis provides a unique method of measuring knee dynamics during activities of daily living such as walking. The purpose of this study was to identify biomechanical features characterizing the gait of patients with mild-to-moderate knee OA and to determine if the biomechanical differences become more pronounced as the locomotor system is stressed by walking faster. Principal component analysis was used to compare the gait patterns of a moderate knee OA group (n=41) and a control group (n=43). The subjects walked at their self-selected speed as well as at 150% of that speed. The two subject groups did not differ in knee joint angles, stride length, and stride time or walking speed. Differences in the magnitude and shape of the knee joint moment waveforms were found between the two groups. The OA group had larger adduction moment magnitudes during stance and this higher magnitude was sustained for a longer portion of the gait cycle. The OA group also had a reduced flexion moment and a reduced external rotation moment during early stance. Increasing speed was associated with an increase in the magnitude of all joint moments. The fast walks did not, however, increase or bring out any biomechanical differences between the OA and control groups that did not exist at the self-selected walks.
机译：骨关节炎（OA）是导致膝关节退行性变的慢性疾病。三维步态分析提供了一种独特的方法，可以在步行等日常活动中测量膝盖的动态。这项研究的目的是确定表征轻度至中度膝骨关节炎患者步态的生物力学特征，并确定随着运动系统通过更快地行走而受到压力时，生物力学差异是否变得更加明显。主成分分析用于比较中度膝骨关节炎组（n = 41）和对照组（n = 43）的步态模式。受试者以自己选择的速度以及该速度的150％行走。两组受试者的膝关节角度，步幅，步幅或步行速度均无差异。两组之间发现了膝关节力矩波形的大小和形状的差异。 OA组在站立期间的内收力矩幅度较大，并且较高的幅度在步态周期的较长时间内得以维持。在早期的姿势中，OA组还减少了屈曲力矩，并减少了外旋力矩。速度的提高与所有关节力矩的增加有关。然而，快速步行并没有增加或显示出OA和对照组之间在自选步行中不存在的任何生物力学差异。

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