Posteromedial dislocation of the ankle without fracture

Area of Science:

• Orthopedics
• Sports Medicine
• Traumatology

Background:

• Posteromedial ankle dislocation without fracture is a rare injury.
• Often occurs in young adults during athletic activities.
• Associated neurovascular injuries are common in open cases.

Purpose of the Study:

• To evaluate treatment outcomes for posteromedial ankle dislocations without fracture.
• To determine the necessity of deltoid ligament repair.
• To assess the impact of lateral ligament repair on outcomes.

Main Methods:

• Retrospective case series of eight patients with posteromedial ankle dislocation without fracture.
• Treatment included closed reduction and immobilization for closed injuries.
• Open injuries underwent débridement and anatomical repair of lateral ligaments.

Main Results:

• Three patients with closed dislocations achieved good functional and radiographic results with closed reduction.
• Five patients with open dislocations treated with lateral ligament repair also showed good long-term outcomes.
• One patient with an open dislocation without lateral ligament repair developed instability and degenerative changes.

Conclusions:

• Closed reduction and immobilization are effective for closed posteromedial ankle dislocations.
• Anatomical repair of lateral ligaments is crucial for good outcomes in open posteromedial ankle dislocations.
• Deltoid ligament repair is not necessary for these injuries.