Iliohypogastric

Iliohypogastric nerve is a branch of the first lumbar nerve. It is also known as the superior hypogastric nerve. It provides sensory innervation to the skin of the lateral and anterior parts of the gluteal region and motor innervation to the internal oblique and transversus abdominis muscles.

Anatomy

The iliohypogastric nerve originates from the L1 spinal nerve. It travels on the anterior surface of the psoas major muscle and then crosses obliquely across the quadratus lumborum muscle. It then pierces the transversus abdominis muscle near the iliac crest and divides into a lateral cutaneous branch and an anterior cutaneous branch.

Lateral cutaneous branch

The lateral cutaneous branch of the iliohypogastric nerve provides sensory innervation to the skin of the lateral gluteal region.

Anterior cutaneous branch

The anterior cutaneous branch of the iliohypogastric nerve provides sensory innervation to the skin of the anterior gluteal region.

Clinical significance

Damage to the iliohypogastric nerve can result in loss of sensation in the lateral and anterior gluteal region and weakness of the internal oblique and transversus abdominis muscles. This can occur due to trauma, surgery, or diseases such as diabetes.

See also

• Lumbar plexus
• Psoas major muscle
• Quadratus lumborum muscle
• Transversus abdominis muscle
• Internal oblique muscle

References

Iliohypogastric Resources
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