French translation and validation of the Cumberland Ankle Instability Tool, an instrument for measuring functional ankle instability

• Published in: Foot and ankle surgery Vol. 26; no. 4; pp. 391 - 397
• Main Authors: Geerinck, A., Beaudart, C., Salvan, Q., Van Beveren, J., D’Hooghe, P., Bruyère, O., Kaux, J.-F.
• Format: Journal Article
• Language: English
• Published: France Elsevier Ltd 01.06.2020
• Subjects: Ankle instability; CAIT; Cumberland Ankle Instability Tool; Psychometrics; Translation; Validation; Validation; Psychometrics; Cumberland Ankle Instability Tool; Translation; Ankle instability; CAIT
• ISSN: 1268-7731; 1460-9584; 1460-9584
• DOI: 10.1016/j.fas.2019.05.002

•The Cumberland Ankle Instability Tool is now available in French.•The CAIT-F is a reliable tool for detecting and rating functional ankle instability.•A score of ≤23 points indicates the presence of functional ankle instability. Ankle sprains are one of the most common musculoskeletal injuries, and can lead to chronic ankle instability (CAI). The Cumberland Ankle Instability Tool (CAIT) measures a subset of CAI, functional ankle instability (FAI). Because no French version existed, we set out to translate and validate the CAIT in French. The CAIT was translated using a forward-backward methodology. We examined its psychometric properties and calculated a cut-off score for FAI in a sample of 102 subjects (median age 22 years). The CAIT was translated without significant problems. The CAIT-F can discriminate between those with and without FAI (p < 0.001), with a cut-off score of ≤ 23 points. The test-retest reliability is excellent (ICC = 0.960), as is the internal consistency (α = 0.885). Construct validity was confirmed. No floor or ceiling effects were detected among subjects with FAI. The CAIT is now available in French, and is a valid and reliable instrument.