Knee injury and Osteoarthritis Outcome Score (KOOS) - validation and comparison to the WOMAC in total knee replacement.
Ewa M. Roos,Sören Toksvig-Larsen +1 more
TLDR
The Knee injury and Osteoarthritis Outcome Score (KOOS) is a valid, reliable, and responsive outcome measure in total joint replacement and may be at least as responsive as the WOMAC.Abstract:
The Knee injury and Osteoarthritis Outcome Score (KOOS) is an extension of the Western Ontario and McMaster Universities Osteoarthrtis Index (WOMAC), the most commonly used outcome instrument for assessment of patient-relevant treatment effects in osteoarthritis. KOOS was developed for younger and/or more active patients with knee injury and knee osteoarthritis and has in previous studies on these groups been the more responsive instrument compared to the WOMAC. Some patients eligible for total knee replacement have expectations of more demanding physical functions than required for daily living. This encouraged us to study the use of the Knee injury and Osteoarthritis Outcome Score (KOOS) to assess the outcome of total knee replacement. We studied the test-retest reliability, validity and responsiveness of the Swedish version LK 1.0 of the KOOS when used to prospectively evaluate the outcome of 105 patients (mean age 71.3, 66 women) after total knee replacement. The follow-up rates at 6 and 12 months were 92% and 86%, respectively. The intraclass correlation coefficients were over 0.75 for all subscales indicating sufficient test-retest reliability. Bland-Altman plots confirmed this finding. Over 90% of the patients regarded improvement in the subscales Pain, Symptoms, Activities of Daily Living, and knee-related Quality of Life to be extremely or very important when deciding to have their knee operated on indicating good content validity. The correlations found in comparison to the SF-36 indicated the KOOS measured expected constructs. The most responsive subscale was knee-related Quality of Life. The effect sizes of the five KOOS subscales at 12 months ranged from 1.08 to 3.54 and for the WOMAC from 1.65 to 2.56. The Knee injury and Osteoarthritis Outcome Score (KOOS) is a valid, reliable, and responsive outcome measure in total joint replacement. In comparison to the WOMAC, the KOOS improved validity and may be at least as responsive as the WOMAC.read more
Citations
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Journal ArticleDOI
The Knee injury and Osteoarthritis Outcome Score (KOOS): from joint injury to osteoarthritis.
Ewa M. Roos,L. Stefan Lohmander +1 more
TL;DR: The KOOS is a valid, reliable and responsive self-administered instrument that can be used for short-term and long-term follow-up of several types of knee injury including osteoarthritis.
Journal ArticleDOI
Measures of knee function: International Knee Documentation Committee (IKDC) Subjective Knee Evaluation Form, Knee Injury and Osteoarthritis Outcome Score (KOOS), Knee Injury and Osteoarthritis Outcome Score Physical Function Short Form (KOOS-PS), Knee Outcome Survey Activities of Daily Living Scale (KOS-ADL), Lysholm Knee Scoring Scale, Oxford Knee Score (OKS), Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), Activity Rating Scale (ARS), and Tegner Activity Score (TAS)
TL;DR: In this paper, a review of knee measures of knee function was presented, which included the following 9 patient-reported outcomes: Activity Rating Scale, International Knee Documentation Committee Subjective Knee Evaluation Form, Knee Injury and Osteoarthritis Outcome Score, knee OA, Physical Function Short Form, Lysholm Knee Scoring Scale, Tegner Activity Scale, Oxford Knee Score, and Western Ontario and McMaster Universities OsteOarthritis Index (WOMAC).
Journal ArticleDOI
Magnetic resonance observation of cartilage repair tissue (MOCART) for the evaluation of autologous chondrocyte transplantation: Determination of interobserver variability and correlation to clinical outcome after 2 years
TL;DR: High resolution MRI and well-defined MRI variables are a reliable, reproducible and accurate tool for assessing cartilage repair tissue for autologous chondrocyte transplantation.
Journal ArticleDOI
Treatment of Symptomatic Cartilage Defects of the Knee Characterized Chondrocyte Implantation Results in Better Clinical Outcome at 36 Months in a Randomized Trial Compared to Microfracture
Daniel B.F. Saris,Johan Vanlauwe,Jan Victor,Karl Almqvist,René Verdonk,Johan Bellemans,Frank P. Luyten +6 more
TL;DR: Characterized chondrocyte implantation for the treatment of articular cartilage defects of the femoral condyles of the knee results in significantly better clinical outcome at 36 months in a randomized trial compared with MF.
Journal ArticleDOI
A Randomized, Controlled Trial of Total Knee Replacement.
Søren Thorgaard Skou,Ewa M. Roos,Mogens Berg Laursen,Michael Skovdal Rathleff,Lars Arendt-Nielsen,Ole Simonsen,Sten Rasmussen +6 more
TL;DR: In patients with knee osteoarthritis who were eligible for unilateral total knee replacements, treatment with total knee replacement followed by nonsurgical treatment resulted in greater pain relief and functional improvement after 12 months than did nons surgical treatment alone.
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