Free transverse rectus abdominis myocutaneous flap reconstruction of a massive lumbosacral defect using superior gluteal artery perforator vessels.

Despite significant advances in reconstructive surgery, the repair of massive lumbosacral defects poses significant challenges. When the extent of soft tissue loss, tumor resection, and/or radiation therapy preclude the use of traditional local options, such as gluteal advancement flaps or pedicled thigh flaps, then distant flaps are required. We report a case of a 64-year-old male who presented with a large sacral Marjolin's ulcer secondary to recurrent pilonidal cysts and ulcerations. The patient underwent wide local composite resection, which resulted in a wound measuring 450 cm(2) with exposed rectum and sacrum. The massive defect was successfully covered with a free transverse rectus abdominis myocutaneous flap, providing a well-vascularized skin paddle and obviating the need for a latissimus flap with skin graft. The free-TRAM flap proved to be a very robust flap in this situation and would be one of our flaps of choice for similar defects.