Responsiveness, reliability, and validity of Arabic version of Oxford Knee Score for total knee arthroplasty

Bin sheeha, B, Williams, AE ORCID: https://orcid.org/0000-0001-9737-5375, Johnson, DS, Granat, MH ORCID: https://orcid.org/0000-0002-0722-2760, Bin Nassar, A and Jones, R ORCID: https://orcid.org/0000-0001-5242-185X 2020, 'Responsiveness, reliability, and validity of Arabic version of Oxford Knee Score for total knee arthroplasty' , Journal of Bone and Joint Surgery .

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Abstract

Background: The Oxford Knee Score (OKS) is a reliable, valid, and sensitive assessment tool for individuals undergoing a total knee arthroplasty (TKA). The published psychometric assessment of the Arabic version of the OKS (OKS-Ar) is limited to male patients and has not been assessed for responsiveness following TKA. The aim of this study was to assess the reliability, validity, and responsiveness of the OKS-Ar in an inclusive population of patients undergoing TKA. Methods: One hundred Arabic-speaking patients awaiting TKA were assessed with the OKS-Ar, the Arabic version of the Knee injury and Osteoarthritis Outcome Score (KOOS-Ar), and a visual analogue scale for pain (VAS-P) in order to assess the correlation between the OKS-Ar and the KOOS-Ar and VAS-P and determine the construct validity. Repeat assessments were completed 7 to 10 days after the first assessment and 6 months after TKA. Results: Questionnaires were completed by 80 female and 20 male participants with a mean age of 62 ± 8 years. The test and retest median scores showed no significant difference from one another, with a strong Spearman correlation between the 2 measurements (rs = 0.94). Bland-Altman limits of agreement showed no significant bias. The Cronbach alpha was 0.85 indicating high internal consistency. There was no floor or ceiling effect before TKA, and the post-TKA ceiling effect was only 2%. The OKS-Ar pain component correlated strongly with the KOOS-Ar pain subscale (rs = 0.73). The OKS-Ar effect size was 3.09, which was larger than that of all of the KOOS subscales at 6 months after TKA. Conclusions: To our knowledge, this is the first study to assess reliability, validity, and responsiveness of the OKS-Ar after TKA. The validity and reliability results are similar to those found for both the original English-language OKS and the OKS translated into other languages. We believe that this is also the first study to assess OKS-Ar responsiveness after TKA and to show a large effect size. We found that the OKS-Ar is a feasible, valid, reliable, and sensitive measurement tool to assess pain and function in TKA-treated individuals whose main language is Arabic.

Item Type: Article
Schools: Schools > School of Health and Society > Centre for Health Sciences Research
Journal or Publication Title: Journal of Bone and Joint Surgery
Publisher: Lippincott, Williams & Wilkins
ISSN: 0021-9355
Related URLs:
Depositing User: Prof Richard Jones
Date Deposited: 25 Jun 2020 14:50
Last Modified: 25 Jun 2020 15:09
URI: http://usir.salford.ac.uk/id/eprint/57442

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