The fracture of the lateral malleolus at the syndesmosis with fracture, avulsion or rupture of the medial malleolus and fracture of the posterior margin of the distal tibia is usually caused by a high-impact trauma such as a motor vehicle accident, a fall, or a sports-related injury.
Diagnosis of this type of injury is usually made through physical examination of the patient, imaging studies such as an X-ray, CT scan or MRI, and possibly also arthroscopy.
Differential diagnosis of this injury includes ligament tears, tendinitis, sprains, and muscle strains.
Treatment of this injury often includes immobilization and rest, physical therapy, and in some cases, surgical intervention.
The prognosis for this type of injury is generally good, though the recovery time can vary depending on the severity of the injury. With proper treatment, most patients can regain full use of the affected limb.