The "limited rectus sheath incisions" technique for DIEP flaps using preoperative CT angiography.

The abdominal wall donor site has become popularized for autologous breast reconstruction, with low donor site morbidity one of its key attributes. Further improvements in donor site outcomes have been facilitated through muscle sparing techniques, such as the use of the deep inferior epigastric artery (DIEA) perforator (DIEP) flap, and the use of modifications to closing the rectus sheath following muscular dissection, such as the use of endoscopic techniques and the use of mesh. We describe a new and unique method for potentially minimizing donor site damage during DIEP flap harvest: the "limited rectus sheath incisions" technique. This approach is only possible in select cases, the choice of which can be aided with the use of preoperative computed tomography angiography (CTA). In select patients, there may be an extended segment of DIEA that does not give any musculocutaneous perforators, and thus does not require open exposure. In such cases, limited incision to the rectus sheath may be made: one to access the periumbilical perforators and a separate incision to access the pedicle near its origin on the external iliac artery. This incision may then be made in a muscle-splitting fashion, in the line of external oblique fibers. This approach may reduce damage to the anterior rectus sheath, and may contribute to improving donor site morbidity. (c) 2009 Wiley-Liss, Inc. Microsurgery, 2009.