External iliac artery

Dr Daniel J Bell and Dr Henry Knipe et al.

The external iliac artery (EIA) is the larger of the two terminal branches of the common iliac artery (CIA).

Gross anatomy


The common iliac artery bifurcates into the internal iliac artery and external iliac artery at the level of the pelvic brim anterior to the sacroiliac joint. 


The external iliac artery courses medially along the iliopsoas muscle 1. After it enters the thigh under the inguinal ligament, it changes name and continues as the common femoral artery, supplying the lower limb.

Anatomy: Abdominopelvic

Anatomy: Abdominopelvic

Article information

rID: 23059
System: Vascular
Section: Anatomy
Synonyms or Alternate Spellings:
  • External iliac arteries (EIAs)
  • External iliac arteries
  • External iliac artery (EIA)

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Cases and figures

  • Figure 1: iliac arteries (Gray's illustration)
    Drag here to reorder.
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