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. 2011;33(13-14):1103-9.
doi: 10.3109/09638288.2010.520805. Epub 2011 Jan 5.

Correlation between single limb support phase and self-evaluation questionnaires in knee osteoarthritis populations

Ronen Debi  1 , Amit Mor, Ganit Segal, Ofer Segal, Gabriel Agar, Eytan Debbi, Nahum Halperin, Amir Haim, Avi Elbaz
Affiliations

Correlation between single limb support phase and self-evaluation questionnaires in knee osteoarthritis populations

Ronen Debi et al. Disabil Rehabil. 2011.

Abstract

Purpose: 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).

Method: 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.

Results: 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).

Conclusion: We recommend integrating SLS as an objective parameter in the comprehensive evaluation of patients with knee OA.

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Figures

Figure 1
Figure 1
Single limb support distribution according to (a) WOMAC-pain, (b) WOMAC function and (c) SF-36 overall score quartiles. The box plots represent the median value of SLS with the range of the 1st quartile and the 3rd quartile.
See this image and copyright information in PMC

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