Iliolumbar artery
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At the time the article was created Grace Florescu had no recorded disclosures.
View Grace Florescu's current disclosuresAt the time the article was last revised Bahman Rasuli had no recorded disclosures.
View Bahman Rasuli's current disclosuresThe iliolumbar artery is one of three branches of the posterior division of the internal iliac artery.
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Summary
- origin: posterior division of the internal iliac artery
- location: pelvis
- supply: ilium, iliacus muscle, psoas major muscle, quadratus lumborum muscle, erector spinae muscle, anterior superior iliac spine anastomoses, and the L5/S1 foramen
- branches: iliac and lumbar branches
Gross anatomy
Origin and branches
The iliolumbar artery originates from the posterior division of the internal iliac artery. It proceeds posteriorly and superolaterally toward the iliac fossa. Here it divides into iliac and lumbar branches.
The iliac branch supplies the iliac fossa. The lumbar branch proceeds laterally towards muscles of the posterior abdominal wall, which it subsequently supplies.
Supply
The iliac branch of the iliolumbar artery supplies the ilium and iliacus muscle as well as contributing to anastomoses around the anterior superior iliac spine.
The lumbar branch supplies the foramen between L5 and S1. It proceeds towards psoas major and quadratus lumborum, which it also supplies. It extends posteriorly and also gives supply to the erector spinae.
Variant anatomy
The iliolumbar artery is often quoted as the first branch of the posterior division of the internal iliac artery, however, the order may vary. It may arise directly from the internal iliac artery, the common iliac artery, or other branches of the internal iliac artery.
Related pathology
The iliolumbar artery may be injured in trauma of the sacrum, lumbar spine or pelvis.
Quiz questions
References
- 1. Last's anatomy, regional and applied. Churchill Livingstone. ISBN:044304662X. Read it at Google Books - Find it at Amazon
- 2. FAAA KLMMPFIACFRSM, Dalley AF, Agur AM. Clinically Oriented Anatomy, Sixth Edition. Lippincott Williams & Wilkins. ISBN:1605476528. Read it at Google Books - Find it at Amazon
- 3. DSc SSP. Gray's Anatomy. Churchill Livingstone. (2011) ISBN:0443066841. Read it at Google Books - Find it at Amazon
- 4. Kiray A, Akçalı O, Tayefi H et-al. Anatomical variations of iliolumbar artery and its relation with surgical landmarks. Acta Orthop Traumatol Turc. 2011;44 (6): 464-8. Pubmed citation
Incoming Links
- Branches of internal iliac artery (mnemonic)
- Posterior spinal arteries
- Aortoiliac occlusive disease
- Ilium
- Iliopsoas muscle
- Psoas major muscle
- Anterior spinal artery
- Lumbar arteries
- Obturator artery
- Sacroiliac joint
- Cone artery
- Branches of anterior and posterior divisions of the internal iliac artery (mnemonic)
- Quadratus lumborum muscle
- Internal iliac artery
- Sacrum
- Common iliac artery
- Deep circumflex iliac artery
- Branches of the posterior division of the internal iliac artery (mnemonic)
- Psoas minor muscle
- Iliacus muscle
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