Original Article – Clinical
Pilot Study of the Suitability of Dorsal Vulval Skin as a Transposition Flap: Vascular Anatomic Study and Clinical Application
Article first published online: 14 MAY 2013
© Copyright 2013 by The American College of Veterinary Surgeons
Volume 42, Issue 5, pages 523–528, June 2013
How to Cite
Hunt, G. B., Winson, O., Fuller, M. C. and Kim, J. Y. (2013), Pilot Study of the Suitability of Dorsal Vulval Skin as a Transposition Flap: Vascular Anatomic Study and Clinical Application. Veterinary Surgery, 42: 523–528. doi: 10.1111/j.1532-950X.2013.12013.x
- Issue published online: 1 JUL 2013
- Article first published online: 14 MAY 2013
- Manuscript Accepted: 3 JUN 2012
- Manuscript Received: 7 NOV 2011
To identify the blood supply to the vulval fold and adjacent skin, and evaluate it as a transposition flap for closing perineal wounds in dogs.
Animals or Sample Population
Five female canine cadavers and 2 cases referred for excision of mast cell tumors adjacent to the vulva.
Dissection was performed to identify the vascular supply to the vulval fold in two cadavers following arterial injection of red latex and methylene blue, respectively. In three cadavers, barium sulfate mixed 1:1 with water was injected into the terminal aorta. The vulval fold and surrounding perineal skin was excised and radiographed. Transposition flaps using the vulval fold and adjacent skin were used to close skin defects in two dogs presented for wide excision of mast cell tumors situated ventro-lateral and dorso-lateral to the vulva, respectively.
The vulval fold and adjacent skin was perfused bilaterally by branches of the ventral perineal and external pudendal arteries, which entered dorsally and ventrally, respectively. As incisions used to create a transposition flaps from the skin surrounding the vulval fold transect these vessels, the flap is dependent on the sub-dermal plexus for survival. There was 100% survival of transposition flaps in the 2 clinical cases and healing proceeded uneventfully with acceptable cosmetic and functional results.
The vulval fold and surrounding skin can be used as a subdermal plexus flap to close large perineal defects in dogs.
Availability of a defined local skin flap will improve treatment of diseases resulting in large perineal skin defects in female dogs.