ischioanal fossa

The ischioanal fossa lies on each side of the anal canal.

Ischioanal fossa - a fat filled space at the lateral sides of anal canal.

It lies in the anal triangle of perineum in between the right and left ischioanal fossa.

When present it extends towards the ischioanal fossa travelling along the ischial ramus and fusing with the obturator fascia.

The ischioanal fossa (formerly called ischiorectal fossa) is the fat-filled space located lateral to the anal canal and inferior to the pelvic diaphragm.

Piercing the wall of the pudendal canal, it divides into two or three branches which cross the ischioanal fossa, and are distributed to the muscles and integument of the anal region, and send offshoots around the lower edge of the gluteus maximus to the skin of the buttock.