Lumboinguinal nerve

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Lumboinguinal nerve
Cutaneous nerves of the right lower extremity. Front and posterior views. (Lumboinguinal visible at upper left, in green.)
Cutaneous nerves of the right lower extremity. Front and posterior views. (Lumboinguinal visible at upper left.)
From genitofemoral nerve
Latin ramus femoralis nervi genitofemoralis, nervus lumboinguinalis
TA A14.2.07.010
FMA 16496
Anatomical terms of neuroanatomy

The lumboinguinal nerve, also known as the femoral or crural branch of genitofemoral, is a nerve in the abdomen. The lumboinguinal nerve is a branch of the genitofemoral nerve. The "femoral" part supplies skin to the femoral triangle area.


The lumboinguinal nerve arises from the genitofemoral nerve. It descends alongside the external iliac artery, sending a few filaments around it, and, passing beneath the inguinal ligament, enters the sheath of the femoral vessels, lying superficial and lateral to the femoral artery. Here, it pierces the anterior layer of the sheath of the vessels and the fascia lata, and supplies the skin of the anterior surface of the upper part of the thigh.[1] :343

On the front of the thigh it communicates with the anterior cutaneous branches of the femoral nerve.

A few filaments from the lumboinguinal nerve may be traced to the femoral artery.

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This article incorporates text in the public domain from page 953 of the 20th edition of Gray's Anatomy (1918)

  1. ^ Drake, Richard L.; Vogl, Wayne; Tibbitts, Adam W.M. Mitchell; illustrations by Richard; Richardson, Paul (2005). Gray's anatomy for students (Pbk. ed.). Philadelphia: Elsevier/Churchill Livingstone. ISBN 978-0-443-06612-2.