Cross cultural adaptation,reliability and validity of the Greek version of Identification of Functional Ankle Instability (IdFAI) questionnaire |
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| Affiliation: | 1. Diakovere Annastift – Orthopedic Department of the Hannover Medical School (MHH), Anna-von-Borries-Straße 1-7, 30625 Hannover, Germany;2. Laboratory for Biomechanics and Biomaterials of the Hannover Medical School, Haubergstrasse 3, 30625 Hannover, Germany;1. Department of Orthopaedic Surgery, Klinikum Dortmund, Beurhausstraße 40, 44137 Dortmund, Germany;2. Department of Radiology, Klinikum Dortmund, Beurhausstraße 40, 44137 Dortmund, Germany;3. Department of Traumatology and Orthopaedic Surgery, Cologne-Merheim Medical Center (CMMC), University of Witten/Herdecke, Ostmerheimer Str. 200, 51109 Cologne, Germany;4. Department of Traumatology and Orthopaedic Surgery, University of Halle, Ernst-Grube-Straße 40, 06120 Halle, Germany;5. Department of Orthopaedic Surgery, Klinikum Dortmund, Member Faculty of Health Witten/Herdecke University, Beurhausstraße 40, 44137 Dortmund, Germany;1. Department of Orthopedic Surgery, Faculty of Medicine, Mansoura University, Egypt;2. Foot and Ankle Research and Innovation Laboratory, Harvard Medical School, Massachusetts General Hospital, Boston, MA, USA;3. Department of Orthopedic Surgery, Academic Medical Center, University of Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands;4. Foot and Ankle Service, Department of Orthopedic Surgery, Massachusetts General Hospital and Newton-Wellesley Hospital, Boston, USA;5. Foot and Ankle Service, Hospital of Special Surgery, New York, USA |
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| Abstract: | BackgroundThe objectives of our study were to develop the Greek version of the Identification of Functional Ankle Instability (IdFAI) questionnaire and to evaluate its psychometric properties.MethodsThe IdFAI was translated and adapted into Greek according to the guidelines for cross-cultural adaptation of self report measures. It was tested for test-retest reliability, validity, internal consistency and floor-ceiling effects in 141 participants (54 males, 87 females; 23.5 ± 7.2 years). All participants were asked to fill the Greek IdFAI (IdFAI-GR), the Cumberland Ankle Instability Tool (CAIT), and the Lower Extremity Functional Scale (LEFS), in order to determine construct validity. To determine the test-retest reliability, fifty randomly selected individuals re-filled IdFAI seven days after the first session.ResultsThe IdFAI-GR had high internal consistency (Cronbach alpha = 0.94) and excellent test-retest reliability (ICC2,1 = 0.97; SEM = 0.7). The IdFAI-GR had strong correlation with the CAIT (r = 0.7; p < 0.001) and moderate correlation with the LEFS (r = 0.5; p < 0.001). No ceiling or floor effects were observed.ConclusionThe Greek IdFAI questionnaire has proven to be a valid and reliable instrument to identify functional ankle instability. It can therefore, be used for both clinical and research purposes in Greek-speaking individuals. |
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| Keywords: | Ankle Instability Questionnaires Reliability Validation |
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