Traumatic Aneurysm of Perforating Peroneal Artery ARTERIAL BLEEDING-CAUSE OF SEVERE PAIN FOLLOWING INvERSIoN, PLANTAR FLEXION, ANKLE SPRAINS

Sprains of the lateral ligamentous structures of the ankle joint produced by plantar tlexion and inversion are common and frequently cause severe pain. Most authorities relate the pain to the soft-tissue injury and the associated hemorrhage and swelling. Post-traumatic aneurysm of the perforating branch of the peroneal artery should be added to this differential diagnosis as a rare but important possi-bi lily. Case Report A nineteen-year-old white man sustained an inversion sprain of his left ankle while play-ing basketball on December 10, 1970. Evaluation in the Emergency Room revealed marked swelling over the anterolateral aspect of the left ankle joint without gross ligamentous insta-bility. There was severe tenderness directly over the anterior fibulotalan ligament. Roentgeno-grams showed no fractures and a diagnosis of a sprain of the left fibulotalar ligament was made. The patient was admitted to the hospital and was treated with elevation and Ace bandage wrapping. On December 12, 1970, the patient was re-examined and was found to have a large non