Effect of severity of knee osteoarthritis on the variability of gait parameters
Effect of severity of knee osteoarthritis on the variability of gait parameters
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DOI：
10.1016/j.jelekin.2011.07.011
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发表时间：
2011-10-01
影响因子：
2.5
通讯作者：
Kiss, Rita M.
中科院分区：
文献类型：
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作者：
Kiss, Rita M.
步态分析为不同严重程度的膝骨关节炎（OA）患者的步态模式和步态变异性提供了重要信息。本研究的目的是阐明步态参数的可变性如何受到膝关节OA严重程度的影响。对三组不同程度膝关节OA的受试者（20名无OA的健康受试者和90名中度或重度OA患者）进行三种不同控制步行速度的步态分析。步态参数的变异性通过时空参数的方差系数（CV）和角度参数的平均方差系数（MeanCV）来表征。基于我们的研究结果，我们得出了当行走速度与自我选择的速度不同时，步态的复杂性会降低。在膝关节炎患者中，患侧角度参数变异性的降低代表关节柔韧性的降低。这导致下肢跨步运动的一致性下降，如时空参数变异性增加所示。关节灵活性和运动一致性的降低可能与运动复杂性的降低有关。运动链的其他关节，如非受累侧关节和骨盆，在步进运动的补偿和适应以及安全步态的能力中发挥重要作用。结果表明，与膝骨关节炎相关的步态变异性是性别依赖的。在康复过程中，必须特别注意改善步态稳定性和本体感觉，并考虑性别差异。(C) 2011 Elsevier Ltd.版权所有。
Gait analysis has provided important information concerning gait patterns and variability of gait in patients with knee osteoarthritis (OA) of varying severity. The objective of this study was to clarify how the variability of gait parameters is influenced by the severity of knee OA. Gait analysis was performed at three different controlled walking speeds in three groups of subjects with varying degrees of knee OA (20 healthy subjects with no OA and 90 patients with moderate or severe OA). The variability of gait parameters was characterized by the coefficient of variance (CV) of spatial-temporal parameters, as well as by the mean coefficient variance (MeanCV) of angular parameters. Based on our results, we conclude that the complexity of gait decreases if the walking speed differs from the self-selected speed. In patients with knee OA, the decreased variability of angular parameters on the affected side represents decreased joint flexibility. This leads to decreased consistency in movements of the lower limbs from stride-to-stride, as shown by increased variability of spatial-temporal parameters. Decreased joint flexibility and consistency of movement can be associated with decreased complexity of movement. Other joints of the kinetic chain, such as joints of the non-affected side and the pelvis, play an important role in compensation and adaptation of step-by step motion and in the ability of secure gait. Results suggest that the variability of gait associated with knee osteoarthritis is gender-dependent. During rehabilitation, particular attention must be paid to improving gait stability and proprioception and gender differences should be taken into account. (C) 2011 Elsevier Ltd. All rights reserved.