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Medical Term:

ischioanal fossa


a wedge-shaped space with its base toward the perineum and lying between the tuberosity of the ischium and the obturator internus muscle laterally and the external anal sphincter and the levator ani muscle medially.

Synonym(s): fossa ischioanalisTA, fossa ischiorectalis, ischiorectal fossa, Velpeau fossa

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.