Pudendal Nerve
Last updated 20.09.12
Definition
-
Features
- Mixed motor & sensory & ANS
- Spinal roots: S2 – S4
Innervation
-
Clinical
Relevance
Pathway
- Nerve
truck 1cm proximal to ischial spine
- Passes
anterior & inferior
- Divides
- Inferior rectal: EAS,
perianal skin
- Perineal nerve: perineal
muscles, skin of labia & vestibule
- Dorsal nerve of
clitoris/penis: clitoris or penis
- Trunk
passes posterior to junction of ischial spine & sacrospinous ligament
- Lies medial to internal
pudendal vessels
- Site of nerve block
- Close proximity to posterior
femoral cutaneous nerve
References
Moores Clinically Oriented Anatomy