Iliohypogastric nerve

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Iliohypogastric nerve
Lumbar plexus.svg
Plan of lumbar plexus. (Iliohypogastric visible at upper left.)
The lumbar plexus and its branches. (Iliohypogastric visible at upper left.)
Latin Nervus iliohypogastricus
From lumbar plexus
Innervates Sensory: Skin over the lateral gluteal region and above the pubis[1]
Motor: internal and transverse abdominal muscles
Gray's p.950
TA A14.2.07.003
FMA 16482
Anatomical terms of neuroanatomy

The iliohypogastric nerve is the superior branch of the anterior ramus of spinal nerve L1 (one of the lumbar nerves) after this nerve receives fibers from T12 (subcostal nerve). The inferior branch is the ilioinguinal nerve.

It emerges from the upper part of the lateral border of the psoas major, and crosses obliquely in front of the quadratus lumborum to the iliac crest, running posterior to the kidneys.

It then perforates the posterior part of the transversus abdominis, near the crest of the ilium, and divides between that muscle and the obliquus internus abdominis into a lateral and an anterior cutaneous branch.


Branches include:


The iliohypogastric nerve communicates with the subcostal nerve and ilioinguinal nerves.

Additional images[edit]


This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links[edit]