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Pseudoaneurysm of the Perforating Peroneal Artery after Subtalar Joint Injury: A Case Report

Traumatic pseudoaneurysm of the peroneal artery or one of its branches is a rare phenomenon. Although singular, it has been reported following both non-penetrating trauma as well as iatrogenic trauma: ankle sprain,3,4,10,11 fracture,8 ankle arthroscopy,7 percutaneous tendoachilles lengthening,5 plantar fasciotomy,6 femoro-peroneal bypass,9 removal of hardware from the tibia,2 and insertion of a catheter into the anterior tibial artery.12 Due to their uncommon presentation, diagnosis and treatment of these types of pseudoaneurysms are often delayed; since few aneurysms clot spontaneously, medical or surgical intervention is then required. Physicians should be aware of these pseudoaneurysms and understand their natural history. We are presenting the first reported case of a pseudoaneurysm after an ankle sprain with a concomitant subtalar interosseous ligament injury.