Perforating cutaneous nerve
| Perforating cutaneous nerve | |
|---|---|
| File:Gray828.png Plan of sacral and pudendal plexuses. | |
| File:Gray826and831.svg 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 | Lua error in Module:Wikidata at line 746: attempt to index field 'wikibase' (a nil value). |
| TH | {{#property:P1694}} |
| TE | {{#property:P1693}} |
| FMA | {{#property:P1402}} |
| Anatomical terms of neuroanatomy [[[d:Lua error in Module:Wikidata at line 865: attempt to index field 'wikibase' (a nil value).|edit on Wikidata]]] | |
The perforating cutaneous nerve is a cutaneous nerve of the sacral plexus that provides sensory innervation to the skin of the buttocks.[2]
Structure
[edit | edit source]Origin
[edit | edit source]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
[edit | edit source]It pierces the inferior part of the sacrotuberous ligament,[4] then passes along the inferior border of the gluteus maximus muscle.[4][2]
Distribution
[edit | edit source]The perforating cutaneous nerve innervates the skin that overlies the inferomedial portion of gluteus maximus muscle.[3]
Variation
[edit | edit source]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
[edit | edit source]References
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External links
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