Inferior Cluneal Nerve

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• The Sacram sensory branches of S1-S3 give rise to the posterior femoral cutaneous nerve of the thigh (PFCN), which in turn gives rise to the inferior cluneal nerves (ICN)

• Along with the sciatic and pudendal nerves, the PFCN travels via the sciatic notch

• The lateral anal region, lateral labia majora, and inferior region of the buttocks are all innervated by it

• It divides into the inferior cluneal and perineal branches in the subgluteal area

• The nerves wind repeatedly around the gluteus maximus' inferior edge. 

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Inferior cluneal nerve entrapment syndrome can be a misdiagnosed and confused with pudendal neuralgia. A positive diagnostic block at the lateral and inferior edges of the ischium with a negative anesthetic response to a pudendal nerve block may suggest the lesion is involving the inferior cluneal nerve.

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MORE INFO TO COME...

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