Background: Patellar tendinopathy is characterized by progressive activity-related anterior knee pain and patellar tendon dysfunction. It is observed in sports involving running and jumping. The Victorian Institute of Sports Assessment–Patellar (VISA-P) is a questionnaire originally developed in English to assess the symptoms and repercussions of patellar tendinopathies on daily and physical activities. Purpose: To test the validity, reliability, and psychometric properties of the translated Arabic version of the VISA-P-A questionnaire in patients with patellar tendinopathy. Method: Thirty experts (3 panels) and 160 participants with mean age (of 18.93±3.29 years) were involved in this research. Test-retest and internal consistency analysis were used to test reliability. Intra-class correlation coefficient (95% CI) was used for test-retest analysis, while Cronbach’s alpha value was used to measure internal consistency. Face, content, convergent, construct, and divergent validity was evaluated for the VISA-P-A. Factor analysis and internal construct validity were assessed, and convergent and divergent validity were tested by the correlation between VISA-P-A and SF-36. Results: VISA-P-A has one factorial structure and has a very strong association with SF-36. It has a high internal consistency reliability where Cronbach α was between 0.819 and 0.887 (0.853). The test-retest analysis was 0.996, (P< 0.0001) suggesting that test-retest findings are strongly correlated. Conclusion: The Arabic version of the VISA-P questionnaire is a reliable and valid tool to assess patellar tendinopathy in the Egyptian population. Factor analysis demonstrated that it had one factor and the convergent and divergent validity of the VISA-P-A has very high levels of correlation with SF-36. Therefore, it could be recommended in the physical function assessment of patellar tendinitis for Arabic-speaking people.
