| Summary points: | A 12-year-old with uncontrolled type 1 diabetes mellitus develops profuse arterial haemorrhaging while undergoing surgical debridement and dressing of an amputation wound. This case report describes the complications during surgery, the approach to stopping the bleeding and management of the complications, and outcome. The authors discuss the literature on the best type of clavicular incision in patients with subclavian artery injury, the controversy surrounding the concept and practice of emergency room thoracotomy, and the need to establish a proximal control whenever an arterial bleed is suspected in which a temporary haemostasis has been achieved. |