The goal of this clinical trial is to compare at 5 years the sporting activity of patients whose ankle had been treated by reconstruction or repair following chronic lateral instability. The main question it aims to answer is:

What is the long-term sporting activity status of patients whose ankle had been treated by reconstruction or repair following chronic lateral instability ?

Participants will visit the clinic once every year during 5 years for clinical checkup.

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