recurrent

Definition

Patients usually complain of subluxation rather than dislocation

- rarely requires reduction

Different entity to acute posterior dislocation usually

Epidemiology

Rare

Aetiology

1.  Ligamentous laxity > 50%

- commonly associated with MDI

- posterior only 20%

- posterior & inferior 20%

Definition

Chronic instability due to rupture of one or more parts of the lateral ligament

Anatomy

Progressive injury

1. Anterolateral capsule

2. ATFL

3. CFL

NHx

Can lead to ankle OA over time