The Versatility of the Pudendal Thigh Fasciocutaneous Flap Used as an Island Flap

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Abstract
The pudendal thigh flap is a sensate fasciocutaneous flap based on the terminal branches of the superficial perineal artery, which is a continuation of the internal pudendal artery. Several authors have reported using this axial patterned flap in a bilateral fashion to reconstruct the vagina, mostly in patients with vaginal atresia. The technique is simple, safe, and reliable, and no stents or dilators are required. The reconstructed vagina has a natural angle and is sensate. The donor site in the groin can be closed primarily with an inconspicuous scar. The distinct advantages of this flap widen its indications to several other pathologies. In this article, the authors report on the bilateral use of the flap to reconstruct a vagina in patients with congenital atresia (n = 8) and after oncological resection (n = 5). Furthermore, the versatility of this island flap is also demonstrated by its use in a unilateral fashion in patients with recurrent or complex rectovaginal fistulas (n = 4) and in two patients with a defect of the posterior urethra in a heavily scarred perineum. All 31 pudendal thigh flaps survived completely. Some wound dehiscence was observed in two patients. Two other patients required a minor correction at the introitus of the vagina. The functional outcome was excellent in all patients, despite the presence of some hair growth in the flaps. This article discusses the expanding indications of this versatile flap and the refinements in operative technique.

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