ArticleQuality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation2013
Can pain and function be distinguished in the Oxford Knee Score in a meaningful way? An exploratory and confirmatory factor analysis.
Article in Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02998125 (A Psychometric Analysis of the Arabic Version of Oxford Knee Score Before and After Total Knee Arthroplasty in a Middle East Population and an Exploration of Outcomes Post-total Knee Arthroplasty in the Middle East), which is not on this map. Cited by 54 papers, 1 of them a synthesis that pooled it.
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The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
A Psychometric Analysis of the Arabic Version of Oxford Knee Score Before and After Total Knee Arthroplasty in a Middle East Population and an Exploration of Outcomes Post-total Knee Arthroplasty in the Middle East
Who cites it
54 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Post-operative patient-related risk factors for chronic pain after total knee replacement: a systematic review.BMJ open · 2017Pooled it
- A pilot randomised controlled trial of an online self-management programme for people with persistent pain post-knee replacement (Kneed).Clinical rehabilitation · 2025Trial
- The effect of supplementation with type I and type III collagen peptide and type II hydrolyzed collagen on pain, quality of life and physical function in patients with meniscopathy: a randomized, double-blind, placebo-controlled study.BMC musculoskeletal disorders · 2025Trial
- Trial
- Predictors of Patient-Reported Pain and Functional Outcomes Over 10 Years After Primary Total Knee Arthroplasty: A Prospective Cohort Study.The Journal of arthroplasty · 2017Trial
- The longitudinal relationship between physical capacity and self-perceived physical functioning after total hip and knee arthroplasty.Osteoarthritis and cartilage open · 2026Article
- The Oxford Hip and Knee Scores in patients undergoing hip and knee arthroplasty: cross-cultural validation study based on 110,000 patients.Acta orthopaedica · 2026Article
- [PROMs as instruments for outcome assessment after total knee arthroplasty in three different EndoCert-Certified institutional surgical settings].Orthopadie (Heidelberg, Germany) · 2026Article
- Association between pre-operative mental health and recovery outcomes following total knee arthroplasty.Scientific reports · 2026Article
- Article
- Estimating the minimal important change of single-item measures using the adjusted predictive modeling method or the longitudinal confirmatory factor analysis method.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2026Article
- Prevalence and Nomogram-Based Prediction Model of Neuropathic Pain After Knee Arthroplasty.Journal of pain research · 2026Article
- The structural validity of the Danish version of the Oxford Knee Score is not substantiated using Rasch analysis and confirmatory factor analysis.Bone & joint research · 2025Article
- Preoperative Clinical Phenotyping for Individualised Rehabilitation in End-Stage Knee Osteoarthritis.Journal of functional morphology and kinesiology · 2025Article
- Improvement in six of the 12 Oxford Knee Score questions is independently associated with patient satisfaction following knee arthroplasty.Bone & joint open · 2025Article
- Anchor questions to improve patient-reported outcome measure interpretability in patients undergoing knee or hip arthroplasty - a mixed-methods content validity, construct validity, and reliability study.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2025Article
- High-dimensional item response theory analysis of patient-reported outcomes in total knee arthroplasty.NPJ digital medicine · 2025Article
- Socioeconomic inequalities in patient-reported outcome measures among total hip and knee arthroplasty patients: a comprehensive analysis of instruments and domains.International journal for equity in health · 2025Article
- Reliability of the Star Excursion Balance Test with End-Stage Knee Osteoarthritis Patients and Its Responsiveness Following Total Knee Arthroplasty.Journal of clinical medicine · 2024Article
- Does Proprioception-Based Rehabilitation Enhance Functional Outcome in Total Knee Arthroplasty? A Prospective Randomised Study.Indian journal of orthopaedics · 2024Article
Corrections and comments
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Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe purpose of this paper was to examine if pain and functioning can be distinguished in the Oxford Knee Score (OKS) in a meaningful way. This was done by (1) conducting exploratory factor analysis to explore the factorial structure of the OKS and (2) conducting confirmatory factor analysis to examine whether a two-factor solution is superior to a one-factor solution.
methodsSecondary data analysis of four independent datasets containing OKS scores on 161,973 patients was performed. Four independent datasets contained data on: (1) 156, 788 patients from the NHS HES/PROMS dataset, (2) 2,405 consecutive patients from the South West London Elective Operating Centre, (3) 2,353 patients enrolled in the Knee Arthroplasty Trial and (4) 427 consecutive patients listed for knee replacement surgery at the Nuffield Orthopaedic Centre in Oxford.
resultsFactor extraction methods suggested that, depending on the method employed, both one- and two-factor solutions are meaningful. Overall and in each data set some cross-loading occurred and item loadings were consistent across two factors. On confirmatory factor analysis, both one- and two-factor models had acceptable fit indices. This allowed the creation of the 'OKS pain component' and the 'OKS functional component' subscales.
conclusionsFactor analysis confirmed the original conceptual basis of the OKS but offered an option to perform additional analyses using pain and functional subscales. Further research should focus on providing further evidence on construct validity and responsiveness of the newly derived subscales.
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