OBJECTIVES: The aims of this work are to culturally adapt the Identification of Functional Ankle Instability questionnaire (IdFAI) into Arabic language and to examine its psychometrics. DESIGN: Cross-sectional study. SETTING: This research took place at Cairo University in Egypt. PARTICIPANTS: Twenty eight college-aged students participated in the translation and cultural adaptation, while another 86 college-aged students participated in the measurements (validity and reliability). MAIN OUTCOME MEASURES: The original IdFAI was translated into Arabic language using standard guidelines. The Arabic version of the IdFAI (IdFAI-Ar) and the Arabic version of the Lower Extremity Functional Scale (LEFS-Ar) were applied to 86 college-aged students with and without functional ankle instability. The IdFAI-Ar was tested on two occasions with an interval of one week to investigate its psychometrics. RESULTS: The IdFAI-Ar had a moderate correlation with LEFS-Ar and a strong correlation with ankle status classification. The reliability and internal consistency were excellent. The accuracy, sensitivity, and specificity were 0.91, 0.80, and 0.99 respectively. CONCLUSION: The IdFAI-Ar has high validity and reliability. It can be used in clinical and research practices as a region-specific tool to discriminate between participants with and without functional ankle instability in the Arabic-speaking countries.

Khalil, A. A., Docherty, C. L., Elhafez, S. M., & Mattar, A. G. (2021). Validity and reliability of the Arabic version of the Identification of Functional Ankle Instability questionnaire (IdFAI-Ar) in college-aged population. Physical Therapy in Sport : Official Journal of the Association of Chartered Physiotherapists in Sports Medicine, 49, 250–254. https://doi.org/10.1016/j.ptsp.2021.03.008

https://pubmed.ncbi.nlm.nih.gov/33823337/