Inguinal triangle

The inguinal triangle is an anatomical region located in the caudal abdominal wall, typically described in domestic mammals such as dogs and horses. It serves as a site of potential herniation (inguinal hernia), particularly in male animals.

Boundaries of the Inguinal Triangle:

• Medially: Lateral border of the rectus abdominis muscle.

• Cranially: Caudal margin of the internal abdominal oblique muscle.

• Caudolaterally: Inguinal ligament (or the aponeurosis of the external abdominal oblique muscle).

This triangle forms part of the deep inguinal ring, a passageway through which structures of the spermatic cord (in males) or round ligament (in females) pass through the abdominal wall. Its clinical significance lies in its vulnerability to herniation due to its relatively weak muscular support.