- Divides space deep to inguinal ligament
- Medial fascia of iliopsoas
- Fascia blends with inguinal ligament in front and pectineal ligament and pectineus fascia behind
- Thus the only way under the ligament her is beneath iliopsoas fascia
- Medial to iliopectineal arch is a space through which iliac vessels pass
- Thickened band of fused iliac and psoas fascia passing posteriorly from the posterior aspect of the inguinal ligament across the anterior aspect of the femoral nerve to attach to the iliopectineal eminence of the hip bone. The iliopectinal arch thus forms a septum that subdivides the space deep to the inguinal ligament into a lateral muscular lacunae and a medial vascular lacunae. When a psoas minor muscle is present, its tendon of insertion blends with the iliopectineal arch. SYN: arcus iliopectineus [TA], iliopectineal ligament, ligamentum iliopectineale.
