Posterior branch of coccygeal nerve
The posterior division of the coccygeal nerve does not divide into a medial and a lateral branch, but receives a communicating branch from the last sacral; it is distributed to the skin over the back of the coccyx.[1] This article incorporates text in the public domain from page 925 of the 20th edition of Gray's Anatomy (1918)This neuroanatomy article is a stub.You can help Wikipedia by expanding it.