Cross-cultural adaptation and validation of the victorian institute of sport assessment-patella questionnaire for French-speaking patients with patellar tendinopathy

Abstract

STUDY DESIGN: Clinical measurement study. BACKGROUND: The Victorian Institute of Sport Assessment-Patella (VISA-P), originally developed in English, assesses the severity of patellar tendinopathy symptoms. To date, no French version of the questionnaire exists. OBJECTIVES: The aim of our study was to translate the VISA-P into French and verify its psychometric properties. METHODS: The translation and cultural adaptation were performed according to international recommendations in 6 steps: initial translation, translation merging, back translation to the original language, use of an expert commiee to reach a prefinal version, test of the prefinal version, and expert commiee appraisal of a final version. Afterward, the psychometric properties of the final French version (VISA-PF) were assessed in 92 subjects, divided into 3 groups: pathological subjects (n = 28), asymptomatic subjects (n = 22), and sports-risk subjects (n = 42). RESULTS: All members of the expert commiee agreed with the final version. On a scale ranging from 0 to 100, with 100 representing an asymptomatic subject, the average ±v SD scores on the VISA-PF were 53 ±v 17 for the pathological group, 99 ±v 2 for the healthy group, and 86 ±v 14 for the sports-risk group. The test-retest reliability of the VISA-PF was excellent, with good internal consistency. Correlations between the VISA-PF and divergent validity of the Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36) were low, and the correlation coefficient values measured between the VISA-PF scores and converged items of the SF-36 were higher. CONCLUSION: The VISA-PF is understandable, valid, and suitable for French-speaking patients with patellar tendinopathy.