Ankle fractures

Orthopaedic Trauma Association (OTA) comprehensive fracture classification (modified AO-Weber classification)[2]Fracture and dislocation compendium. Orthopaedic Trauma Association Committee for Coding and Classification. J Orthop Trauma. 1996;10 Suppl 1:v-154.

There are three types based on fracture morphology of the lateral malleolus. Sub-groups incorporate fractures of the medial malleolus and posterior malleolus:

• Type A: infrasyndesmotic

• Type B: transsyndesmotic

• Type C: suprasyndesmotic

Lauge-Hansen classification[3]Lauge-Hansen N. Fractures of the ankle. II. Combined experimental-surgical and experimental-roentgenologic investigations. Arch Surg. 1950;60:957-85.

There are four categories of injury based on mechanism:

• Supination: adduction injuries

• Supination: external rotation injuries

• Pronation: abduction injuries

• Pronation: external rotation injuries.