Ewa M. Roos|Sören Toksvig?Larsen
Knee injury and Osteoarthritis Outcome Score (KOOS) - validation and comparison to the WOMAC in total knee replacement.
Lund University|Lund University
knee injury osteoarthritis outcome score koos extension western ontario mcmaster universities osteoarthrtis index womac commonly used outcome instrument assessment patientrelevant treatment effects osteoarthritis koos developed younger andor active patients knee injury knee osteoarthritis previous studies groups responsive instrument compared womac patients eligible total knee replacement expectations demanding physical functions required daily living encouraged us study use knee injury osteoarthritis outcome score koos assess outcome total knee replacement studied testretest reliability validity responsiveness swedish version lk 10 koos used prospectively evaluate outcome 105 patients mean age 713 66 women total knee replacement followup rates 6 12 months 92 86 respectively intraclass correlation coefficients 075 subscales indicating sufficient testretest reliability blandaltman plots confirmed finding 90 patients regarded improvement subscales pain symptoms activities daily living kneerelated quality life extremely important deciding knee operated indicating good content validity correlations found comparison sf36 indicated koos measured expected constructs responsive subscale kneerelated quality life effect sizes five koos subscales 12 months ranged 108 354 womac 165 256 knee injury osteoarthritis outcome score koos valid reliable responsive outcome measure total joint replacement comparison womac koos improved validity may least responsive womac