Perforating cutaneous nerve

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Perforating cutaneous nerve

The perforating cutaneous nerve is a nerve in the human body that is part of the peripheral nervous system. It is a branch of the sacral plexus, which is a network of nerves that provides motor and sensory nerves for the posterior thigh, most of the lower leg, the entire foot, and part of the pelvis.

Anatomy

The perforating cutaneous nerve typically arises from the sacral plexus, specifically from the S2 and S3 nerve roots. It travels through the sacrotuberous ligament and then perforates the gluteus maximus muscle to reach the skin. This nerve is responsible for providing sensory innervation to the skin over the lower part of the buttocks.

Function

The primary function of the perforating cutaneous nerve is to supply sensory innervation to the skin over the lower buttocks. This allows for the sensation of touch, pain, and temperature in this region.

Clinical Significance

Damage or injury to the perforating cutaneous nerve can result in sensory deficits in its area of distribution. This can occur due to trauma, surgical procedures, or other medical conditions affecting the sacral plexus.

Related Structures

• Sacral plexus
• Gluteus maximus
• S2 nerve root
• S3 nerve root
• Peripheral nervous system

See Also

• Peripheral nerve injury
• Sacral plexus disorders
• Cutaneous innervation