Inferior cluneal nerves

Diagram showing the inferior cluneal nerves in relation to the gluteal region.

The inferior cluneal nerves are a group of cutaneous nerves that provide sensory innervation to the skin of the lower part of the buttocks. These nerves are branches of the posterior femoral cutaneous nerve, which is a major nerve of the sacral plexus.

Anatomy

The inferior cluneal nerves originate from the posterior femoral cutaneous nerve, which itself arises from the sacral plexus, specifically from the anterior rami of the S1, S2, and S3 spinal nerves. The posterior femoral cutaneous nerve descends through the gluteal region and gives off the inferior cluneal nerves as it passes beneath the gluteus maximus muscle.

The inferior cluneal nerves curve around the lower border of the gluteus maximus to reach the skin of the lower buttock. They are responsible for the sensory innervation of this area, providing the sensation of touch, pain, and temperature.

Function

The primary function of the inferior cluneal nerves is to supply sensory innervation to the skin over the lower part of the buttocks. This includes the perception of various sensory modalities such as touch, pressure, pain, and temperature.

Clinical Significance

Injury or irritation of the inferior cluneal nerves can lead to sensory disturbances in their area of distribution. This may result in symptoms such as numbness, tingling, or pain in the lower buttock region. Such conditions can arise from trauma, surgical procedures, or compression of the nerves.

Related pages

• Posterior femoral cutaneous nerve
• Sacral plexus
• Gluteus maximus
• Cutaneous nerves