Pudendal canal

Last revised by Craig Hacking on 27 Jul 2022

Pudendal canal, also known as Alcock's canal, is a sheath derived from the fascia of the obturator internus muscle, and is found in the lower lateral wall of the ischiorectal fossa.

Gross anatomy

The pudendal canal lies on the medial surface of the obturator internus muscle and the medial aspect of ischial tuberosity above the falciform ridge.


It transmits the pudendal nerve with internal pudendal artery and vein from the lesser sciatic foramen posteriorly to the deep perineal pouch anteriorly.

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