Fractures
An ankle fracture occurs when one or more of the bones that make up the ankle joint are broken: tibia (shinbone), fibula (smaller bone of the lower leg), or talus (a small bone that sits between the heel bone (calcaneus) and the tibia and fibula. Multiple broken bones mean increased ankle instability. Causative factors for an ankle fracture include twisting, rotating or rolling the ankle, as well as falling and direct impact. Symptoms include immediate and severe pain, swelling, bruising, tenderness, inability to tolerate weight, and deformity.
Arthritis 
