Abstract
An 82-year-old man underwent abdominal aortic aneurysm repair with a prosthetic graft four years previously. He presented with pain and swelling of the left thigh in a generally debilitated condition. Computed tomography scan revealed left distal anastomotic false aneurysm and bacterial culture was positive for methicillin-resistant Staphylococcus aureus (MRSA). We performed debridement of the abscess and irrigation by an electrolyzed strong acid solution. Twelve months later, the abscess cavity reexpanded in the retroperitoneal space occupied by the prosthetic graft. We then transferred the pedicle rectus abdomis muscle flap to the abscess cavity. After this treatment, he has had no active inflammatory signs and no abscess formation for 12 months.