Fibula Fracture

Signs and Symptoms

• Sudden pain
• Loss of leg function
• Tenderness
• Inability to bear weight on the leg
• Deformity
• Rapid swelling

Fibula Fracture Explained

There are two types of Fibula fracture that can occur - a direct trauma fracture or a stress fracture. Both are self-explanatory in their causes and very painful. The Fibula is the smaller of the two shin bones, on the outer part of the lower leg. It can be felt as the bony lump on the outside of the ankle (malleolus), which is a common area for a fracture to occur. A fracture to the malleolus may also be known as a Pott's fracture.

The terminology used varies, but it should be noted that a broken bone is the same as a fractured bone. A fracture may be full, partial or hairline, but are all referred to as a fracture.

Stress fractures of the Fibula do sometimes occur, although these are far less common than stress fractures to the Tibia, as the Fibula is not a load bearing bone. They are more likely to be caused by repetitive muscle traction forces.

Traumatic fractures of the Fibula occur most regularly in association with an ankle sprain, where part of the bone is pulled away with the ligament. This is known as an avulsion fracture. They may also occur due to a direct impact to the outside of the lower leg.

Treatment of a Fibula Fracture

• If a fracture is suspected, seek medical attention immediately.
• The lower leg will be X-rayed to confirm the diagnosis.
• Fractures of the Fibula are usually placed in a lower leg and ankle cast for 6-8 weeks to immobilise the bone.
• Non-weight bearing may also be advised to allow the bone to heal. Crutches may be provided.
• In severe or complicated fractures, internal fixation with screws and plates or rods may be necessary.