Perforating cutaneous nerve

The perforating cutaneous nerve is a cutaneous nerve of the sacral plexus that provides sensory innervation to the skin of the buttocks.[2]

Perforating cutaneous nerve
Plan of sacral and pudendal plexuses.
Cutaneous nerves of the right lower extremity. Front and posterior views. (Perforating cutaneous nerve not labeled, but region visible.)
Details
FromS2-S3,[1] sacral plexus
InnervatesGluteal sulcus
Identifiers
Latinnervus cutaneus perforans
TA98A14.2.07.036
TA26546
FMA19040
Anatomical terms of neuroanatomy

Structure

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Origin

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The perforating cutaneous nerve typically[3] arises from the posterior divisions of[4] anterior rami of sacral spinal nerves S2 and S3 of the sacral plexus.[3]

Course

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It pierces the inferior part of the sacrotuberous ligament,[4] then passes along the inferior border of the gluteus maximus muscle.[4][2]

Distribution

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The perforating cutaneous nerve innervates the skin that overlies the inferomedial portion of gluteus maximus muscle.[3]

Variation

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Origin

The perforating cutaneous nerve may arise from the pudendal nerve. It is occasionally united with the pudendal nerve at its origin.[3]

It may be absent (this is the case in 36% of individuals) in which case it is replaced by a branch from either the posterior cutaneous nerve of thigh or from the anterior rami of either S3-S4 or S4-S5.[3]

Course

Instead of piercing the sacrotuberous ligament, the perforating cutaneous may instead run with the pudendal nerve, or pass in between the sacrotuberous ligament and the gluteus maximus muscle.[3]

See also

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References

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  1. ^ Adam Mitchell; Drake, Richard; Gray, Henry David; Wayne Vogl (2005). Gray's anatomy for students. Elsevier/Churchill Livingstone. p. 423. ISBN 0-443-06612-4.
  2. ^ a b Sinnatamby, Chummy S. (2011). Last's Anatomy (12th ed.). p. 310. ISBN 978-0-7295-3752-0.
  3. ^ a b c d e f Apaydin, Nihal (2015). "Chapter 47 - Variations of the Lumbar and Sacral Plexuses and Their Branches". Nerves and Nerve Injuries (1: History, Embryology, Anatomy, Imaging, and Diagnostics ed.). Academic Press. p. 635. doi:10.1016/B978-0-12-410390-0.00049-4. ISBN 978-0-12-410390-0.
  4. ^ a b c Mirjalili, S. Ali (2015). "Chapter 46 - Anatomy of the Sacral Plexus L4-S4". Nerves and Nerve Injuries. Vol. 1: History, Embryology, Anatomy, Imaging, and Diagnostics. Academic Press. p. 626. doi:10.1016/B978-0-12-410390-0.00048-2. ISBN 978-0-12-410390-0.
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