Deep inguinal ring

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Deep inguinal ring
Front of abdomen, showing surface markings for arteries and inguinal canal. (Abdominal inguinal ring labeled at lower left.)
Diagram of an indirect, scrotal inguinal hernia ( median view from the left).
Latin annulus inguinalis profundus
Gray's subject #286 1315
Dorlands/Elsevier a_50/12143730

The deep inguinal ring (internal or deep abdominal ring, abdominal inguinal ring, internal inguinal ring) is the entrance to the inguinal canal.


The surface anatomy of the point is disputed, but in a recent study[1] it was found to be at a point between the mid-inguinal point (situated midway between the anterior superior iliac spine and the pubic symphysis) and the midpoint of the inguinal ligament. Traditionally either one of these 2 sites was claimed as its location.

Some sources state that it is at the layer of the transversalis fascia.[2]


It is of an oval form, the long axis of the oval being vertical; it varies in size in different subjects, and is much larger in the male than in the female.


It is bounded, above and laterally, by the arched lower margin of the transversalis fascia; below and medially, by the inferior epigastric vessels.


It transmits the spermatic cord in the male and the round ligament of the uterus in the female.


From its circumference a thin funnel-shaped membrane, the infundibuliform fascia, is continued around the cord and testis, enclosing them in a distinct covering.

Additional images


  1. Koliyadan S, Narayan G, Balasekran P (2004). "Surface marking of the deep inguinal ring". Clin Anat. 17 (7): 554–7. PMID 15376291.
  2. Kyung Won, PhD. Chung (2005). Gross Anatomy (Board Review). Hagerstwon, MD: Lippincott Williams & Wilkins. p. 198. ISBN 0-7817-5309-0.

See also

External links

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.