ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2021
The KOOS-12 shortform shows no ceiling effect, good responsiveness and construct validity compared to standard outcome measures after total knee arthroplasty.
Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.
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Who cites it
14 citing papers in PubMed, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.
- Amount and type of physical activity and sports from one year forward after hip or knee arthroplasty-A systematic review.PloS one · 2021Pooled it
- SPOT: An Early Detection Tool for Predicting Pain Trajectories Following Intra-Articular Injections.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2026Trial
- Optimism and pessimism are antithetically associated with post-operative knee function in patients' undergoing total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Trial
- Clinical outcomes and patient-reported joint noise after total knee arthroplasty using saddle-shaped rotating-platform and bi-cruciate-stabilized implant-surgical systems: a propensity score-matched cohort study.Arthroplasty (London, England) · 2026Article
- Joint Reaction Forces Decrease Following Total Knee Arthroplasty up to 12-Months Post-Surgery.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2026Article
- 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
- Robotic-assisted bone cuts guided by intraoperative load sensors for ligament balancing in restricted kinematic alignment total knee arthroplasty: A retrospective study with 2-year follow-up.Journal of experimental orthopaedics · 2026Article
- Impact of prior knee surgery on change in knee pain, quality of life, and walking speed following supervised education and exercise therapy: an analysis of 30,545 people with knee osteoarthritis.Clinical rheumatology · 2024Article
- Validation of the hip disability osteoarthritis outcome Score-12 shortform in a German cohort.Archives of orthopaedic and trauma surgery · 2024Article
- A cross sectional study exploring the relationship of self-reported physical activity with function, kinesiophobia, self-efficacy and quality of life in an Asian population seeking care for knee osteoarthritis.BMC musculoskeletal disorders · 2024Article
- Cross-cultural adaptation and validation of the KOOS, JR questionnaire for assessing knee osteoarthritis in Spanish-speaking patients.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Article
- Improved Knee Function with Customized vs. Off-the-Shelf TKA Implants-Results of a Single-Surgeon, Single-Center, Single-Blinded Study.Journal of personalized medicine · 2023Article
- Bipolar Sealers and Tourniquet Use Have Similar Outcomes in Total Knee Arthroplasty.Indian journal of orthopaedics · 2022Article
- Psychometric properties of the 12-item Knee injury and Osteoarthritis Outcome Score (KOOS-12) Spanish version for people with knee osteoarthritis.Clinical rheumatology · 2021Article
Corrections and comments
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Authors and funding
7 authors at 6 institutions in 2 countries.
Funding
Abstract
purposeTo investigate the validity, responsiveness and ceiling effect of the recently introduced KOOS-12 and compare its performance to the KOOS, OKS, WOMAC and UCLA activity scales.
methodsPatients from an independent multicentre study examining a medially stabilized knee system prospectively completed the KOOS, OKS, WOMAC and UCLA preoperatively and at 1 year postoperatively. KOOS-12 scores were calculated from the full length KOOS data. Construct validity was assessed using Spearman's correlation analysis. The ceiling effect was evaluated by calculating the percentage of patients with a maximum score. If the percentage exceeded 15%, a ceiling effect was considered to be present. Responsiveness was evaluated by performing paired t tests on the changes in measures and calculation of Cohen's d.
resultsA ceiling effect was present for the KOOS Pain, ADL and QoL subscales and the KOOS-JR at 1 year postoperatively. No ceiling effect was observed for the KOOS-12. Correlation of the KOOS-12 was low (0.3 < r < 0.5) with the UCLA, moderate (0.5 < r < 0.7) with the KOOS symptoms, sports and WOMAC stiffness subscales and high (r > 0.7) with all other scores and subscales. Effect size of the UCLA activity scale was moderate (Cohen's d 0.2-0.8) whereas effect sizes of all other outcome measures were large (d > 0.8).
conclusionThe KOOS-12 does not exhibit a ceiling effect, has good convergent construct validity and is responsive to changes in pain, function, QoL and knee impact between preoperatively and 1 year postoperatively. LEVEL OF EVIDENCE: Diagnostic level III.
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