The original English version of the Western Ontario Shoulder Instability Index will be translated and culturally adapted .Among Shoulder Instability population, Western Ontario Shoulder Instability Index will provided to 90 participants which will be choose through convenience sampling technique . This sampling method based on pre-defined inclusion and exclusion criteria .To check intra-observer reliability of the final Urdu Translation of Western Ontario Shoulder Instability Index, Disability of Arm, Shoulder, and Hand Questionnaire, Walch-Duplay score, Rowe score and Visual Analogue Scale questionnaires will be filled at the same day by two observers for test inter-observers assessment second application will be applied after 35 minutes of first application. Third assessment will be performed after seven days by first observer. Data will be entered and analyzed by using Statistical Package of Social Sciences Version 24 . Internal consistency will be analyzed with Cronbach's alpha value . Intra-class correlation coefficient will be used to check retest reliability. Urdu Translation of Western Ontario Shoulder Instability Index will be evaluated for content validity ,construct validity ,criterion validity and responsiveness.
The goal of this study is to translate Western Ontario Shoulder Instability Index into Urdu and test its authenticity and coherence among the Pakistani community with Shoulder instability.~Also check its correlation with Disability of Arm, Shoulder, and Hand Questionnaire, Rowe score , Walch-Duplay score and Visual Analogue Scale.