ArticleJournal of orthopaedic surgery and research2025
Cross-cultural adaptation and validation of the 12-item short forms of the knee injury and osteoarthritis outcome score (KOOS-12) to Persian language.
Article in Journal of orthopaedic surgery and research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Cross-cultural adaptation and psychometric validation of the first Arabic KOOS-12: a reliable tool for assessing knee outcomes in Arabic-speaking populations.Knee surgery & related research · 2026Article
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3 authors.
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Abstract
backgroundThe aim of this study was to translate, culturally adapt, and validate the 12-item short form of the knee injury and osteoarthritis outcome score (KOOS-12) for use in the Persian language.
methodsThis study employed a cross-sectional design involving 105 participants with moderate to severe knee osteoarthritis (OA). The Persian version of the KOOS-12 was administered to assess its test-retest reliability, internal consistency, and construct validity. Test-retest reliability was evaluated using the intraclass correlation coefficient (ICC), with values above 0.75 indicating excellent reliability. Internal consistency was assessed using Cronbach's alpha, where values between 0.70 and 0.90 indicate good to excellent consistency. Construct validity was examined through Pearson correlation coefficients, comparing KOOS-12 scores with established measures such as the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), cincinnati knee rating system (CKRS), Oxford knee score (OKS), and knee society knee scoring system (KSS). Additionally, the standard error of measurement (SEM) and minimal detectable change (MDC) were calculated to provide insights into the measurement's precision and responsiveness, with SEM calculated as SD × √(1-R) and MDC as 1.96 × √2 × SEM.
resultsThe Persian version of the KOOS-12 was administered to assess its construct validity, test-retest reliability, and internal consistency. Construct validity was evaluated through Pearson correlation coefficients, revealing strong correlations with the KOOS (r = 0.81), moderate correlation with the CKRS (r = 0.56), and strong negative correlation with the WOMAC (r = - 0.77), along with strong correlations with the OKS (r = 0.71) and the KSS (r = 0.73). Test-retest reliability was assessed using the ICC, with values above 0.75 indicating excellent reliability. Internal consistency was measured using Cronbach's alpha, where values between 0.70 and 0.90 indicate good to excellent consistency.
conclusionThe analysis of the Persian KOOS-12 questionnaire confirms its excellent reliability, validity, and suitability for clinical use, supported by excellent internal consistency and excellent test-retest reliability. These findings underscore the importance of culturally adapted instruments and indicate the need for future research to evaluate the KOOS-12's responsiveness to clinical changes over time.
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