J Reconstr Microsurg 2006; 22(7): 509-512
DOI: 10.1055/s-2006-951315
Copyright © 2006 by Thieme Medical Publishers, Inc., 333 Seventh Avenue, New York, NY 10001, USA.

Free Inferior Gluteal Flap Harvest with Sparing of the Posterior Femoral Cutaneous Nerve

Michael R. Zenn1 , John A. Millard1
  • 1Division of Plastic and Reconstructive Surgery, Duke University Medical Center, Durham, North Carolina
Further Information

Publication History

Accepted: May 17, 2006

Publication Date:
17 October 2006 (online)

ABSTRACT

The free inferior gluteal flap is a major secondary choice of autologous tissue for breast reconstruction if the TRAM flap is not an option. Loss of posterior thigh and popliteal sensibility is a frequent sequela of harvesting the free inferior gluteal musculocutaneous flap and the inferior gluteal artery perforator (I-GAP) flap. The posterior femoral cutaneous nerve of the thigh lies directly on the deep surface of the gluteus maximus muscle, having a very close anatomic relationship with the inferior gluteal artery. The purpose of this study was to gain a better understanding of the anatomy of the posterior femoral cutaneous nerve (PFCN), its branches, and their relationship with the inferior gluteal artery (IGA). Eighteen fresh human pelvic halves were dissected for examination during harvesting of the inferior gluteal myocutaneous free flap, to determine if a nerve-sparing approach was possible and how this information might impact on I-GAP flap harvest.

Seventeen of 18 pelvic halves had at least some of the PFCN branches intact after isolation of the IGA pedicle and flap elevation. Three of 18 of the pelvic halves had the entire PFCN and its branches intact after flap elevation. One of 18 pelvic halves required complete transection of the PFCN and its branches in order to isolate the IGA pedicle.

In 94.5 percent of the pelvic halve dissections, it was possible to maintain at least a portion of the PFCN intact after isolation of the inferior gluteal artery pedicle while harvesting the free inferior gluteal myocutaneous flap. These findings support a nerve-sparing approach to inferior gluteal myocutaneous flap elevation to minimize the sequela of posterior thigh anesthesia. These data also emphasize the intimate relationship of the PFCN and the gluteal artery and the real possibility of injury to the PFCN during I-GAP harvest.

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Michael R ZennM.D. F.A.C.S. 

Division of Plastic and Reconstructive Surgery, Duke University Medical Center

Box 3358, Durham, NC 27710