Wing of Ilium - Anterior Border of The Ala

Anterior Border of The Ala

The anterior border of the ala is concave. It presents two projections, separated by a notch.

Of these, the uppermost, situated at the junction of the crest and anterior border, is called the anterior superior iliac spine; its outer border gives attachment to the fascia lata, and the Tensor fasciæ latæ, its inner border, to the Iliacus; while its extremity affords attachment to the inguinal ligament and gives origin to the sartorius

Beneath this eminence is a notch from which the Sartorius takes origin and across which the lateral femoral cutaneous nerve passes.

Below the notch is the anterior inferior iliac spine, which ends in the upper lip of the acetabulum; it gives attachment to the straight tendon of the Rectus femoris and to the iliofemoral ligament of the hip-joint.

Medial to the anterior inferior spine is a broad, shallow groove, over which the Iliacus and Psoas major pass.

This groove is bounded medially by an eminence, the iliopectineal eminence, which marks the point of union of the ilium and pubis.