A broken ankle, also called an ankle fracture, is a common childhood injury. An ankle fracture is a break in one or more of the bones that make up the ankle: the tibia, fibula, and talus.
Ankle fractures in children are more likely to involve the tibia and fibula (the long bones in the lower leg) than the talus (a smaller bone in the foot). Fractures at the ends of the tibia and fibula typically involve the growth plates. Growth plates are areas of developing cartilage tissue that regulate bone growth and help determine the length and shape of the adult bone.