Perforating cutaneous nerve
Script error: No such module "Infobox".Template:Template otherTemplate:Main otherScript error: No such module "Check for unknown parameters". The perforating cutaneous nerve is a cutaneous nerve of the sacral plexus that provides sensory innervation to the skin of the buttocks.[1]
Structure
Origin
The perforating cutaneous nerve typically[2] arises from the posterior divisions of[3] anterior rami of sacral spinal nerves S2 and S3 of the sacral plexus.[2]
Course
It pierces the inferior part of the sacrotuberous ligament,[3] then passes along the inferior border of the gluteus maximus muscle.[3][1]
Distribution
The perforating cutaneous nerve innervates the skin that overlies the inferomedial portion of gluteus maximus muscle.[2]
Variation
Origin
The perforating cutaneous nerve may arise from the pudendal nerve. It is occasionally united with the pudendal nerve at its origin.[2]
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.[2]
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.[2]
See also
References
External links
Template:Lumbosacral plexus Template:Portal bar Template:Authority control