The SGAP Flap is mainly used as an alternative to breast reconstruction and requires significant microsurgical experience to harvest. GAP is the acronym for gluteal artery perforator, which is a blood vessel that runs through the buttocks. An SGAP flap (Superior gluteal artery perforator) uses this blood vessel and a section of the skin and fat from the upper buttocks to reconstruct the breast. An SGAP flap does not use any muscle in the reconstruction process.
This procedure is most suited for women who can’t use tissue from the abdomen. That is because either they lack sufficient donor fat in the abdomen area or have had previous surgeries in the area, like a tummy tuck.