Patients with hip osteoarthritis experience pain and also complain about functional impairment during daily activities such as climbing the stairs and walking 16,17. Strength deficits, stiffness, disturbances in gait, loss of joint movement, and decreased walking velocity are common clinical findings that are peculiar to hip OA 8. Defects in physical function and pain do have a negative effect on the patient's quality of life 16,18 .

Background: The Harris Hip Score (HHS) is a widely used Patient-Related Outcomes score. It measures pain and function levels in patients with hip pathologies. Objectives: The main objective of this study is to translate and culturally adapt the HHS into Arabic, and to assess the reliability and validity of the translated version. Material & Methods: 110 patients participated in this survey. The internal consistency tests were calculated using Cronbach’s alpha. Test-retest reliability (intra-correlation coefficient), convergent construct validity, convergent validity, floor & ceiling effects, and responsiveness were calculated. Bland-Altman Plot and forest plots were done to measure the level of agreement. Results: Test reliability for the first testing situation - calculated using Cronbach's alpha - was 0.98 for the pain subscale, 0.98 for the stiffness, and 0.99 for the physical function subscale. For the second testing, reliability was 0.99, 0.97, and 0.99 (pain, stiffness, and physical function, respectively).

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