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首页> 外文期刊>Gait & posture >In-shoe plantar pressure measurements for patients with knee osteoarthritis: Reliability and effects of lateral heel wedges.
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In-shoe plantar pressure measurements for patients with knee osteoarthritis: Reliability and effects of lateral heel wedges.

机译：膝关节骨关节炎患者的鞋内足底压力测量：可靠性和外侧足跟楔形的影响。

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摘要

Although plantar pressure measurement systems are being used increasingly during gait analyses to investigate foot orthotics, there is limited information describing test-retest reliability of such measurements. Objectives of this study were to (1) examine the test-retest reliability of lateral heel pressure (LHP) and centre of pressure (COP) during walking with and without lateral heel wedges, and (2) evaluate the effects of 4 degrees and 8 degrees lateral heel wedges on the magnitude of LHP, the pathway of the COP and the peak external knee adduction moment (KAM) in subjects with and without knee osteoarthritis (OA). Twenty-six subjects, 12 patients with knee OA and 14 healthy subjects, were evaluated during three lateral heel wedge conditions (control, 4 degrees and 8 degrees ) with standardized footwear. Three-dimensional analyses of gait with optical motion capture, floor-mounted force plate and in-shoe plantar pressure were completed on two occasions. Intraclass correlation coefficients (ICC(2, 1)) for LHP were excellent (0.79-0.83) while ICCs for COP in the medial-lateral and anterior-posterior directions were more variable (0.66-0.86). Reliability was slightly diminished when using heel wedges. Standard errors of measurement suggested considerable day-to-day variability in an individual's measures. Lateral heel wedges significantly (p<0.001) increased LHP, shifted COP anteriorly and laterally, and decreased the KAM. No significant differences were observed between subjects with and without OA. Although the day-to-day variability appears too large to confidently evaluate changes in individual patients, and decreases in reliability with increases in wedge size indicate caution, these results suggest in-shoe measurement of LHP and COP are appropriate for use in studies evaluating biomechanical effects of foot orthoses for knee OA.
机译：尽管在步态分析过程中越来越多地使用足底压力测量系统来研究足部矫形器，但是描述这种测量的重测可靠性的信息有限。这项研究的目的是（1）检查在有和没有侧后跟楔块的情况下行走时侧后跟压力（LHP）和压力中心（COP）的重测可靠性，以及（2）评估4度和8度的影响在有或没有膝骨关节炎（OA）的受试者中，外侧脚后跟楔度会影响LHP的大小，COP通路和峰值外膝内收力矩（KAM）。 26名受试者（12例膝OA患者和14名健康受试者）在3种外侧后跟楔形情况（对照，4度和8度）下使用标准鞋类进行了评估。两次完成了使用光学运动捕捉，地面固定式测力板和鞋内足底压力对步态的三维分析。 LHP的类内相关系数（ICC（2，1））极好（0.79-0.83），而COP的ICC在内侧，前后方向上的变化更大（0.66-0.86）。使用后跟楔块时，可靠性略有下降。测量的标准误差表明个人的测量值每天都有很大的差异。足后跟外侧楔形物显着（p <0.001）增加LHP，使COP向前和向后移动，并降低KAM。有和没有OA的受试者之间没有观察到显着差异。尽管每日的变异性似乎太大而无法自信地评估单个患者的变化，并且随着楔形物尺寸的增加，可靠性下降表明谨慎，但这些结果表明，鞋内LHP和COP的测量适用于评估生物力学的研究脚矫形器对膝骨关节炎的影响。

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