Iliac branch of iliolumbar artery

Iliac branch of iliolumbar artery

The iliac branch of the iliolumbar artery is a small artery that arises from the iliolumbar artery, which itself is a branch of the internal iliac artery. This artery plays a crucial role in supplying blood to the iliac fossa and the surrounding structures.

Diagram of the iliac branch of the iliolumbar artery.

Anatomy

The iliac branch of the iliolumbar artery originates from the iliolumbar artery, which is one of the posterior branches of the internal iliac artery. The iliolumbar artery ascends laterally and posteriorly, passing behind the psoas major muscle.

The iliac branch specifically travels towards the iliac fossa, where it supplies the iliacus muscle and the bone of the ilium. It also anastomoses with branches of the obturator artery and the lateral circumflex femoral artery, contributing to the vascular network of the pelvis and the proximal thigh.

Function

The primary function of the iliac branch of the iliolumbar artery is to provide oxygenated blood to the iliacus muscle and the iliac bone. This is essential for the nourishment and function of these structures, particularly in movements involving the hip joint.

Clinical significance

In surgical procedures involving the pelvis, such as hip replacement or pelvic fracture repair, the iliac branch of the iliolumbar artery may be at risk of injury. Understanding its course and connections is important for surgeons to avoid inadvertent damage and ensure adequate blood supply to the pelvic region.

Related pages

• Iliolumbar artery
• Internal iliac artery
• Iliacus muscle
• Psoas major
• Obturator artery