Ankle fractures happen when one or more of the bones that make up the ankle joint are separated into pieces. There may be ligaments damaged in the process as well. The ankle becomes more unstable when more bones are broken. That can range from a simple break in one bone, that can stop you from moving, to many fractures, which will eventually push your ankle out of place. It would then be advised that you do not put any weight on your ankle for three months.

Types of Ankle Fractures
Lateral malleolus: the bump on the outer part of the ankle
Medial malleolus: the bump on the inside of the ankle
Posterior malleolus: the bony distinction of the tibia; rarely injured on its own.
Lateral and Medial malleolus are the more common injuries.
Bimalleolar fractures: two of the malleoli bones are broken.
Trimalleolar fractures: all three malleoli bones of the ankle are broken.
These fractures derive from a large amount of force, disruption of the ligaments, or a dislocation, and causes instability.
Symptoms:
- Cannot bear weight on the ankle.
- Pain
- Numbness in the foot or ankle.
- Bone pieces visible outside the skin
- Inability to move toes
- Inability to move ankle
- Cold foot
- Color of foot changes to blue