Perforating cutaneous nerve

Perforating cutaneous nerve
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
From	S2-S3,[1] Sacral plexus
Innervates	gluteal sulcus
Identifiers
Latin	nervus cutaneus perforans
TA98	A14.2.07.036
TA2	6546
FMA	19040
	Anatomical terms of neuroanatomy

The perforating cutaneous nerve is a cutaneous nerve that supplies skin over the gluteus maximus muscle.

Structure

The perforating cutaneous nerve arises from the ventral rami of sacral spinal nerve 2 and sacral spinel nerve 3 of the sacral plexus.[2][3] It pierces the lower part of the sacrotuberous ligament.[2][3] It winds around the inferior border of the gluteus maximus muscle.[2][3]

Variation

The perforating cutaneous nerve may arise from the pudendal nerve.[2] It may be absent.[2] It is estimated to be absent in up to a third of people. It may be replaced by a branch from the posterior cutaneous nerve of thigh.[2] It may also be replaced by a branch from the third and fourth, or fourth and fifth, sacral nerves.[2]

The perforating cutaneous may pass around the sacrotuberous ligament (beneath gluteus maximus muscle) rather than piercing it.[3]

Function

The perforating cutaneous nerve supplies the skin covering the medial and lower parts of gluteus maximus.[3]

References

This article incorporates text in the public domain from page 967 of the 20th edition of Gray's Anatomy (1918)

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.
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. pp. 619–626. doi:10.1016/B978-0-12-410390-0.00048-2. ISBN 978-0-12-410390-0.
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. pp. 627–645. doi:10.1016/B978-0-12-410390-0.00049-4. ISBN 978-0-12-410390-0.

External links

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[isbn0-443-06612-4-1] 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.

[:0-2] 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. pp. 619–626. doi:10.1016/B978-0-12-410390-0.00048-2. ISBN 978-0-12-410390-0.

[:1-3] 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. pp. 627–645. doi:10.1016/B978-0-12-410390-0.00049-4. ISBN 978-0-12-410390-0.