Department of Orthopedic Surgery, Assaf Harofeh Medical Center, Zerifin, Israel.
Disabil Rehabil. 2011;33(13-14):1103-9. doi: 10.3109/09638288.2010.520805. Epub 2011 Jan 5.
To investigate the correlation between single limb support (SLS) phase (% of gait cycle) and the Western Ontario and McMaster University Osteoarthritis Index (WOMAC) questionnaire and Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36 Health Survey) in patients with knee osteoarthritis (OA).
A prospective observational study was employed with 125 adults with bilateral medial compartment symptomatic knee OA who underwent a physical and radiographic evaluation. Velocity, step length and SLS were assessed by a computerised mat (GAITRite). Patients completed the WOMAC and SF-36 Health Survey questionnaires.
Statistical analysis examined the correlations between SLS and both questionnaires, between Kellgren & Lawrence (K&L) scores and both questionnaires and between SLS correlations and K&L correlations. We found significantly stronger correlations between SLS and WOMAC-pain, WOMAC-function, the SF-36 pain sub-category, velocity and step length than between K&L scores and these parameters (Pearson's r = 0.50 vs. 0.26, 0.53 vs. 0.34, 0.50 vs. 023, 0.81 vs. 0.33, 0.77 vs. 0.37, respectively; all p < 0.05). Significant differences in SLS were found over WOMAC-pain, WOMAC-function and SF-36 overall score quartiles (p < 0.05 for all).
We recommend integrating SLS as an objective parameter in the comprehensive evaluation of patients with knee OA.
研究单肢支撑（SLS）阶段（步态周期的百分比）与骨关节炎指数（WOMAC）问卷和健康调查 36 项短表单（SF-36 健康调查）在膝骨关节炎（OA）患者中的相关性。
采用前瞻性观察研究，对 125 例双侧内侧间室症状性膝 OA 成人进行体格检查和影像学评估。通过计算机化垫（GAITRite）评估速度、步长和 SLS。患者完成 WOMAC 和 SF-36 健康调查问卷。
统计分析检查了 SLS 与两个问卷之间、Kellgren & Lawrence（K&L）评分与两个问卷之间以及 SLS 相关性与 K&L 相关性之间的相关性。我们发现 SLS 与 WOMAC 疼痛、WOMAC 功能、SF-36 疼痛子类别、速度和步长之间的相关性明显强于 K&L 评分与这些参数之间的相关性（Pearson r = 0.50 与 0.26、0.53 与 0.34、0.50 与 023、0.81 与 0.33、0.77 与 0.37；均 p < 0.05）。在 WOMAC 疼痛、WOMAC 功能和 SF-36 总分四分位数中，发现 SLS 存在显著差异（所有 p < 0.05）。
我们建议将 SLS 作为膝关节 OA 患者综合评估的客观参数。
