Dissection

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(Copyright GEP 2000)

Dissection of the perineum of a young female pig

Jack Mouchel MD

(received 1 december 2002)

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Dissection of the perineum of a young female pig with special reference to the anatomy of the puborectalis muscle and to the external and internal anal sphincters.

We are very grateful to the SOCOPA factory of Evron (France) and specially to his Director, Mr Meyer, without which this study could not have been done.

We would like to thank also Abdul Sultan M.D. who organized on a regular basis workshops about the management of third degree perineal tears. The original idea of the pig model is coming from this workshop which is now being held in Mayday University Hospital (more informations, contact: Abdul Sultan MD).

If you want to obtain a "big" image, click on the small one...it will arrive soon !

	A perineum of a pig in the "gynecological posture" (the arrow is in the uro-genital sinus)
	Transversal view before dissection
	Posterior view
	Puborectalis muscle (arrow between the puborectalis and the anal canal)
	Left upper and transversal view (arrows in the urogenital sinus and the anus) details of the puborectalis and of the external anal sphincter
	Upper view of the detached puborectalis muscle (in the pig the anterior tendon of the muscle is cartilaginous)
	Detached puborectalis
	Perineal view of the external anal sphincter in place
	Dissection of the anterior part of the external anal sphincter, the white internal anal sphincter is now visible (forceps on the ano-cutaneous junction and on the anterior part of the external spincter)
	Detached external anal sphincter
	Internal anal sphincter in place (1)
	Internal anal sphincter in place (2)
	Internal anal spincter in place (arrow between ths sphincter and the mucosa)
	Section of the internal anal sphincter
	Anal mucosa
	Suture of the sectionned internal sphincter.