Perineal branch of S4
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At the time the article was created Jeffrey Cheng had no recorded disclosures.View Jeffrey Cheng's current disclosures
At the time the article was last revised Travis Fahrenhorst-Jones had no recorded disclosures.View Travis Fahrenhorst-Jones's current disclosures
The perineal branch of S4 is a mixed motor and sensory nerve from the sacral plexus and should not be confused with the perineal branch of the pudendal nerve.
The nerve originates from the anterior ramus of the 4th sacral nerve root.
- cutaneous innervation of the posterior aspect of the ischioanal fossa