What is an Avulsion Fracture
What is a 5th Metatarsal Avulsion Fracture
Causes of a 5th Metatarsal Avulsion Fracture
A fifth metatarsal avulsion fracture typically occurs with an inversion injury. The sudden pull of the peroneus brevis muscles that occurs when rolling you ankle results in the fracture of the fifth metatarsal.
Types of a 5th Metatarsal Avulsion Fracture
Complications of a 5th Metatarsal Avulsion Fracture
Complications that can occur include:
- Non union of the fracture site
- Joint disruption resulting in arthritis long term
- Impingement of other structures
Most 5th metatarsal avulsions fractures resolve well long term. It is important that correct treatment is implemented to avoid long term complications with an avulsion fracture
Treatment of a 5th Metatarsal Avulsion Fracture
Treatment varies on the degree of displacement of the avulsed piece of bone treatment options can include:
- CAM walker immobilisation
- Supportive insoles
- Stiffer more supportive shoes
- Surgical fixation of the 5th metatarsal.
It is important that correct treatment implemented to avoid long term complications with an avulsion fracture
Call The Foot and Ankle Centre for further advice on professional management and treatment options.