The Persian version of IdFAI is a reliable and valid tool to identify patients with functional ankle instability which have a history of ankle sprain. Its original three-factor structure was replicated in this study. Implications for Rehabilitation The Persian version of the Identification of Functional Ankle Instability (IdFAI) questionnaire is a reliable and valid instrument in order to identify Iranian patients with functional ankle instability in both clinical practice and research. The Persian IdFAI questionnaire may be considered as a standardized clinical instrument that can be used to classify degree of ankle instability in Iranian Persian-speaking people with a history of lateral ankle sprain. People with a history of ankle sprain can be assessed using IdFAI questionnaire before and after rehabilitative interventions in an attempt to determine any change in their degree of ankle instability over time.

Background: Ankle Instability Instrument (AII) is a questionnaire for determination of ankle stability status. The aim of this study is to cross-culturally translate and investigate the reliability and validity of AII in a sample of Persian-speaking Iranians, suffering from ankle sprain. Methods: One hundred twenty persons with a history of ankle sprain were recruited in the study. All participants completed the Persian version of Ankle Instability Instrument, Cumberland Ankle Instability Tool (CAIT), Foot and Ankle Ability Measure (FAAM) and Foot and Ankle Outcome Score (FAOS) at the baseline. Out of them, 60 randomly selected subjects completed the questionnaires once more, one week later. Face validity, Test–retest reliability, internal consistency, standard error of measurement, minimal metric detectable change, spearman’s correlation coefficient and confirmatory factor analysis of AII measured. We used Lisrel v 8.80 software with significant level of p<0.05. Results: Persian version of AII is clear and unambiguous and its qualitative face validity was confirmed in the pilot study on the 20 subjects with a lateral ankle sprain. The interclass correlation coefficient, Cronbach’s alpha, standard error of measurement and minimal metric detectable change were 0.93, 0.87, 0.81 and 2.25 (95% confidence interval, 0.85-0.96). The Spearman correlations coefficients between AII, and CAIT, FAAM and FAOS measures were 0.91, 0.71 and 0.69 respectively. The original three factor structure of AII was replicated based on the confirmatory factor analysis. Which showed an adequate fit of the model to the data and goodness-of-various fit indices. Conclusion: The Ankle Instability Instrument Persian Version (AII-PV) is a reliable and valid measure for assessing the ankle stability status.

Background: Open reduction and internal fixation is the standard surgical treatment of calcaneal fractures. However, it is associated with a high rate of wound problems. Objectives: In this study, we evaluated the clinical and radiologic outcomes, as well as the wound complication rates of sinus tarsi minimally-invasive approach in the treatment of intra-articular calcaneus fracture. Methods: In a retrospective study, 62 patients who were referred with an intra-articular calcaneus fracture and treated with a minimally-invasive sinus tarsi approach were included. The radiographic evaluations included the assessment of Bohler and Gissane angles before and after the surgery, as well as the height and length of the calcaneus. The clinical outcome was assessed with the American Orthopedic Foot and Ankle Society (AOFAS) questionnaire. Results: The Mean±SD age of the patients was 41.8±12.7 years. The Mean±SD follow-up of the patients was 21.3±10 ‎months. After 6 months, in 43 patients (69.3%) both Bohler’s and Gissane’s angles were significantly improved after the surgery (P=0.003 and P<0.001, respectively). The calcaneus height was significantly improved after the surgery (P=0.009), as well. The Mean±SD AOFAS score of the patients was found 79.6±7. Wound infection was seen in only 1 case (1.6%). Delayed wound healing occurred in 4 cases (6.4%). No other wound complication such as dehiscence and skin necrosis was recorded. Conclusion: Minimally-invasive sinus tarsi approach is an efficacious procedure for the treatment of intra-articular calcaneus fracture with a minimized rate of wound complications.

Purpose We evaluated and compared kinematics of bilateral ankle, knee, and hip joints in patients with chronic unilateral ankle instability (CAI) with healthy controls. Methods Fifteen individuals diagnosed with CAI and a control group of 16 individuals were matched. Different peaks within the gait cycle (at different intervals) for the dorsiplantar, inversion/eversion, and abduction/adduction axis were compared between injured and uninjured sides of patients with CAI with a control group. Results Comparison of the uninjured ankle in CAI with the control group showed higher dorsiflexion in one peak of the stance phase (p = 0.003), higher inversion in one peak of the stance phase (p = 0.022), and the swing phase (p = 0.004). The hip joint of the uninjured side showed higher extension in one peak of the stance phase (p < 0.001), and two peaks of the swing phase (p < 0.05). Furthermore, it showed higher adduction in one peak of the foot flat to mid-stance phase (p = 0.001), higher abduction in one peak of the late swing phase (p = 0.047), and the swing phase (p = 0.032). The knee joint of the uninjured side showed higher flexion in all measured peaks of the gait cycle (p < 0.05) (except for one peak in the late swing phase) compared to the control group. Conclusion Chronic ankle instability results in altered biomechanics of the ipsilateral knee as well as the contralateral ankle, knee, and hip joints. The alterations caused by CAI may predispose patients to overuse and/or acute injuries of other joints of lower extremities during routine and sporting activity.

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