Ankle Fracture

Xray showing a fracture of the Fibula.
Xray showing a fracture of the Fibula.

Definition

What is an ankle fracture?

The ankle joint is composed of 3 bones:

  • tibia (shin bone),
  • fibula and
  • talus.

An 'ankle' fracture refers to breaks near the malleoli, the enlarged ends of the tibia and fibula (you can feel these large bony points on either side of your ankle). Fractures may involve breaks in either malleoli or both together, and in certain serious fractures will also affect the inner foot bone sitting in the ankle, the talus.

Ankle fractures are common injuries that are most often caused by your ankle joint rolling inward or outward.

The treatment of an ankle fracture and the time taken to heal will depend on many factors, including:

  • the type of ankle fracture,
  • where the bone is broken,
  • how many of the bones are broken
  • the condition of your skin over the fracture.

A common way of classifying fractures is the Weber System. This system is based on the relationship between the two large bones – the fibia and tibula. Just above the ankle joint, these two bones are joined by a strong band of tissue called the 'syndesmosis' - a key stabilising feature of the ankle joint. The first type of ankle fracture, the Weber A, shows breaks in the bones below the syndesmosis. As the syndesmosis is intact and the fibula and tibia are stabilised against each other, Weber A fractures are typically fairly stable and heal well with a simple cast. In contrast, the Weber B and C types will frequently require surgery to stabilise them.

The treatment of your ankle fracture can either be:

  • a simple plaster cast
  • surgery with typically a combination of screws and plates.

ankle fractures

15 October, 2011