An isolated dislocated ankle is a rare injury. Usually, there is an associated fracture of the bones that make up the ankle.
The ankle is a hinge joint that connects the lower leg to the foot. The tibia and fibula of the leg come into contact with the talus of the foot, forming the ankle mortise. The majority of the weight bearing in the ankle occurs between the tibia and talus. While the shape of the mortise helps align the ankle joint, the surrounding ligaments are very important in providing stability.
The ankle dislocates as a result of a fall, motor-vehicle crash, or sporting injury.
In addition to the bony injury, there can be damage to blood vessels, nerves, and skin.
The diagnosis is often made clinically.
The emergency treatment is to reduce the dislocation as soon as possible and then splint the ankle to prevent further damage.
Orthopedic consultation is usually required since surgery may be required depending upon the patient's situation.
Arthritis is a common complication of an ankle dislocation.
Most dislocated ankles result from accidental injury and are difficult to prevent.