Ilioinguinal Nerve
Description
Name
- Ilioinguinal Nerve
General
- One of the terminal branches of the lumbar plexus
- Function is sensory innervation to the skin of the anteromedial thigh and part of genitalia
- Innervates internal abdominal oblique, transversus abdominus
Gross Anatomy
- Continuation of the anterior ramus of spinal nerve L1, rarely T12/L2
- Passes posterior to psoas major, emerges anterior to quadratus lumborum
- Continues obliquely passing over iliacus before piercing the transversus abdominus at the iliac crest
- Also passes through the internal oblique muscle to enter the inguinal canal
- After exiting, it gives off its sensory branches
Branches
- Anterior labial nerves
- Anterior scrotal nerves
Motor Innervation
Sensory Innervation
- Skin of proximal medial thigh, mons pubis
- Female: labium majus and root of the clitoris
- Male: anterior scrotum and root of the penis
Anatomic Variation
- Sometimes joins with the iliohypogastric nerve when it enters the quadratus lumborum
Clinical Significance
- Ilioinguinal Nerve Injury
See Also
References
- ↑ Kohan, Lynn, Colleen McKenna, and Anna Irwin. "Ilioinguinal neuropathy." Current Pain and Headache Reports 24 (2020): 1-8.
- ↑ Soneji, Neilesh, and Philip Wenn Hsin Peng. "Ultrasound-guided pain interventions-a review of techniques for peripheral nerves." The Korean journal of pain 26.2 (2013): 111-124.