inStability Treated With Ligament RecOnstruction Augmented With iNternal bracinG

Inclusion Criteria: * patients diagnosed with chronic lateral ankle instability (multiple ankle inversion trauma within 12 months and symptoms present \>1 year). Lateral ankle instability is present if the patient complains of giving way of the ankle and has positive signs of ankle instability during physical exam (talar tilt score of \>15 degrees compared to contralateral ankle or anterior drawer test score of \>10mm compared to the contralateral ankle. * Conservative therapy has failed. * Normal foot and ankle anatomy as determined by orthopedic surgeon. * Patients in whom their ankle symptoms interfere with their physical activities. * Patients with isolated anterior talofibular ligament which is indicated for repair using the Brostrom-Gould technique. * BMI ≤30 * Patients who are able and willing to undergo ankle surgery. * Patients who are able and willing to comply with the rehabilitation protocol in any of the study physiotherapy centers. * Patients who are able and willing to return for follow-up evaluations. * Patients with sufficient understanding of the Dutch language. Exclusion Criteria: * Patients who need concomitant ankle surgery (i.e. Calcaneofibular ligament reconstruction, peroneus tendon repair, arthroscopy of the ankle, etc). * Patients with comorbidities, including musculoskeletal injuries or diseases in other joints than the affected ankle which limits their physical activity. * Ankle instability due to abnormal foot and ankle anatomy. * No objective …