Clinical Research Directory

Inclusion Criteria: * Participants will be screened for eligibility and only those who meet the inclusion criteria according to Delahunt et al. (2010) and Gribble et al. (2013) will be enrolled in our study, i.e., they will participate if they have: 1. At least one significant unilateral lateral ankle sprain in which the subject was unable to walk independently without the aid of crutches (the first sprain occurred more than 12 months ago). 2. Repeated bouts of lateral ankle injury (last injury had to be more than three months prior to inclusion in the study). 3. Feeling of ankle instability "giving way", at least 2 episodes in the last 6 months (Terada et al., 2014). 4. Pain during intense loading. 5. The Cumberland Ankle Instability Tool (CAIT) ≤ 24. 6. Age range of 18-30 years (Delahunt et al., 2010). Exclusion Criteria: * \*Patients will be excluded if they didn't meet the inclusion criteria mentioned above, such as: 1. A previous trauma or surgery to the trunk or lower extremities other than an ankle sprain. 2. Neurological or vestibular impairments with remaining deficits. 3. No participant with CAI had acutely sprained his or her ankle in the 3 months prior to the testing. 4. Participants will be excluded if they have participated in any rehabilitation in the past 6 months. 5. Concussion or head injury or lower back pain in the past 6 months.