Translation, cross-cultural adaptation, and validation of the Italian version of the Oxford Shoulder Instability Score.

Purpose: The Oxford Shoulder Instability Score (OSIS) is self-reported outcome measurement developed to evaluate shoulder instability taking into account also adaptive strategies. Valid, reliable, reproducible, and user-friendly translations of outcome measure instruments are needed to allow comparisons of international study results.

Methods: The Italian translation and cultural adaptation of the OSIS were completed using a "translation-back translation" method and the final version was administered to a sample of 25 consecutive Italian-speaking patients.