It is formed by the external abdominal oblique aponeurosis and is continuous with the fascia lata of the thigh.

The midpoint of the inguinal ligament, halfway between the anterior superior iliac spine and pubic tubercle, is the landmark for the femoral nerve.

The mid-inguinal point, halfway between the anterior superior iliac spine and the pubic symphysis, is the landmark for the femoral artery.

The external iliac arteries pass the inguinal ligament posteriorly and inferiorly.

It is also referred to as Poupart's ligament, because François Poupart gave it relevance in relation to hernial repair, calling it "the suspender of the abdomen" (French: "le suspenseur de l'abdomen").