Classification. The Arbeitsgemeinschaft für Osteosynthesefragen/Orthopaedic Trauma Association (AO/OTA) classification incorporates all fractures of the distal tibia, including extra-articular injuries of the distal tibial metaphysis (Fig. Isolated fibular fractures comprise the majority of ankle fractures in older women, occurring in approximately 1 to 2 of every 1000 white women each year . Classification of distal fibula fractures attempts to split fractures into groups by severity. The malleoli serve as a medial and lateral restraint to the talus, and they are the insertion sites for the tarsal collateral ligaments. 3 This classification system is much more detailed, describes comminution at multiple levels, and differentiates between partial and complete articular injuries.

The commonest classification is the Weber classification that uses the position of the fracture relative to the syndesmosis to group fractures: Weber A: below the syndesmosis (stable) Weber B: at the syndesmosis (may be unstable) Fibular fractures may also occur as the result of repetitive loading and in this case they are referred to as stress fractures. Fractures of the lateral or medial malleolus are the most common type of distal tibia and fibula fractures. 34.2). Fibular fractures in adults are typically due to trauma. Malleolar fractures …