The WORC is an increasingly applied outcome measure for rotator cuff conditions. The WORC is a self-assessment scale that was developed to measure the quality of life of patients with RC disorders. It contains 21 items representing 5 subscales: physical symptoms 6 items, sports/recreation 4 items, work 4 items, lifestyle 4 items, and emotions 3 items, which encompass all aspects of heath as defined by the World Health Organization.~It has been translated and validated in several languages, including Chinese, Dutch, French-Canadian, Japanese, Norwegian, Persian, Polish, Portuguese - Brazilian, Spanish, Swedish and Turkish.~The current studies point out the increasing need for a questionnaire specifically developed to measure health related quality of life in patients treated conservatively, and respecting the following main characteristics: presenting adequate measurement properties and allowing to make comparisons of health-related quality of life between patients.~Cross-cultural adaptation allows globalization of information worldwide without the loss of the conceptual meaning. This enables the exchange and comparisons of valid information among different populations worldwide.~The Western Ontario Rotator Cuff Index has not been translated into the Arabic language, so it has a limited use in Egypt as well as Arabic countries. Therefore, the aim of this study is to translate, culturally adapt, validate, and investigate the reliability of Arabic version of The Western Ontario Rotator Cuff Index.
To evaluate, translate, culturally adapt, validate, and investigate the reliability of Arabic version of The Western Ontario Rotator Cuff Index (WORC).~The null hypothesis of this study will be stated as:~Arabic language version of the WORC doesn't have face, content, or construct validity enough to measure quality of life related to rotator cuff disorders in Arabic patients.~Arabic language version of the WORC doesn't have reliability to measure quality of life related to rotator cuff disorders in Arabic patients