Clinical Research Directory

Inclusion Criteria: * Patient, male or female, aged ≥ 18 years * Patient with chronic ankle instability defined by: * A history of trauma including a severe ankle sprain. * Clinical symptoms persisting for at least 3 months at the time of inclusion: pain, swelling, sensation of 'giving way', sensation of instability, recurrent sprains; Clinical tests (drawer test, varus provocation test) confirming grade III laxity; Imaging results (MRI) confirming clinically suspected ligament damage. * Patient affiliated to or benefiting from a social security scheme * French-speaking patient who has signed an informed consent form Exclusion Criteria: * Patient with deltoid ligament injury, severe fracture or open trauma * Patient with insufficient ligament remnant and/or in too poor a condition to allow Broström-type repair. * Patient with a symptomatic osteochondral lesion * Patient with ankle hyperlaxity (Beighton score \> 3) * Patient with early ankle arthropathy (Takakura arthritis classification ≥ stage 3) * Patient with neuromuscular disorders, systemic inflammatory disorders or tumours. * Patient requiring surgery on both ankles * Patients with a bony deformity of the ankle or foot on the affected side; * Patients with professional athlete status * Patient already included in another study * Protected patient: adult under guardianship, curatorship or other legal protection, deprived of liberty by judicial or administrative decision