Cross-cultural Adaptation and Validation of the Filipino Translation of the Knee Injury and Osteoarthritis Outcome Score in Filipinos with Knee Osteoarthritis at a Tertiary Hospital

Objectives. 1) To translate and cross-culturally adapt the Knee Injury Osteoarthritis Outcome Score (KOOS) into Filipino; 2) validate Filipino translation of KOOS using Short-Form 36 Health Survey (SF-36) among patients with knee osteoarthritis (kOA) at a tertiary hospital.
 Methodology. A version was translated adapted from original English validated following standard guidelines. Adult Fiipino University Phiippines-Philippine General Hospital were asked to complete identical questionnaires containing SF-36, re-test on same after median 14 days. Reliability assessed Cronbach’s alpha intraclass correlation coefficients (ICC); dimensionality convergent divergent construct validity.
 Results. The administered 30 OA (kOA). Cronbach's ? across domains ranged 0.71 0.89 suggesting good internal consistency. reproducibility measurements all subscales by ICC 0.97 1.0. For validity, there moderate between ADL (0.38, p =0.03) knee-related QoL (0.42, p=0.02) SF-36 Physical Functioning (PF). strong (0.51, p=0.003) observed sports recreation domain PF. weak pain (0.015, p=0.93) symptoms (0.15, p=0.42) SF Social Functioning.
 Conclusion. is valid reliable instrument measure different aspects disability affecting quality life kOA.