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Objective: Chronic post-traumatic arteriovenous fistula (AVF) is a late complication of vascular injury and can be presented with symptoms of congestive heart failure, venous hypertension and distal ischaemia. We present an unusual case of chronic ischaemic leg ulcer in young adult caused by post-traumatic AVF. Case report: A 29-year-old-male patient was admitted to our hospital with symptoms of chronic ulcer located on the lateral side of the lower left leg. Arterial pulses distally from the groin were absent. His medical history revealed him to have sustained gunshot injury of the left thigh in the war conflict 18 years before. Angiography showed a large AVF between superficial femoral artery and femoral vein. The patient underwent surgical repair of AVF with reconstruction of superficial femoral artery by saphenous vein interposition under spinal anaesthesia. Completion angiography confirmed AVF exclusion. Leg ulcer healed within a month. Conclusion: Chronic leg ulcer may be the only symptom of large post-traumatic AVF in young adults. [ABSTRACT FROM AUTHOR]