pudendal canal pudendal canal the pudendal canal (also called alcock's canal) is an anatomical structure in the pelvis through which the internal pudendal artery, internal pudendal veins, and the pudendal nerve pass. pudendal canalcoronal section of pelvis, showing arrangement of fasciæ. viewed from behind. (alcock's canal labelled at bottom right.)pudendal nerve and its course through the pudendal canal (labelled in yellow)detailsidentifierslatincanalis pudendalista98a09.5.04.003ta22436fma22071anatomical terminology structure the pudendal canal is formed by the fascia of the obturator internus muscle, or obturator fascia. it encloses the following: internal pudendal artery. internal pudendal veins. pudendal nerve. these vessels and nerve cross the pelvic surface of the obturator internus. clinical significance pudendal nerve entrapment can occur when the pudendal nerve is compressed while it passes through the pudendal canal. history the pudendal canal is also known as alcock's canal, named after benjamin alcock. additional images the superficial branches of the internal pudendal artery. (canal not labeled, but pudendal nerve and internal pudendal artery labeled at bottom right.)