Iliopubic tract

The iliopubic tract is a thickening of the transversalis fascia found in direct relation, immediately posterior to the inguinal (Poupart's) ligament. As the inguinal ligament, the iliopubic tract extends between the anterior superior iliac spine (ASIS) superolaterally, and the pubic tubercle inferomedially. 

This obscure structure has been brought up to light because it is one of the anatomical landmarks used in laparoscopic herniorrhaphy. When securing a mesh to reinforce the posterior abdominal wall, and also prevent mesh migration, the surgeon will place sutures, tacks, or staples in this structure. Since the iliopubic tract (posteriorly) and the inguinal ligament (anteriorly) are so close together, they are both secured when doing this procedure.

Inguinal ligamentImage property of: CAA.Inc.Artist: D.M. Klein
The image shows the location of the inguinal ligament. The iliopubic tract is immediately posterior to it.