Coccygeal plexus

{{Short description|Nerve plexus near the coccyx bone}}

{{Infobox nerve

| Name = Coccygeal plexus

| Latin = plexus coccygeus

| Image = Gray828.png

| Caption = Plan of sacral and pudendal plexuses.

| Image2 =

| Caption2 =

| Innervates =

| BranchFrom = S4-S5, coccygeal nerve

| BranchTo = anococcygeal nerve

}}

The coccygeal plexus is a small nervous plexus upon the pelvic (anterior) surface of the coccygeus muscle.{{cite book |last1=Moore |first1=Keith L. |title=Essential Clinical Anatomy |last2=Dalley |first2=Arthur F. |last3=Agur |first3=Anne M. R. |publisher=Lippincott Williams & Wilkins |year=2017 |isbn=978-1496347213 |pages=586}}

This plexus is formed by the ventral rami of the fourth and fifth sacral nerves (S4-S5), and the ventral ramus of the coccygeal nerve (Co). The relative contributions of S4 and S5 are minor and major, respectively. The coccygeal plexus gives rise to the anococcygeal nerve.{{Cite web|title=Coccygeal Nerve - an overview {{!}} ScienceDirect Topics|url=https://www.sciencedirect.com/topics/neuroscience/coccygeal-nerve|access-date=2021-06-04|website=www.sciencedirect.com}}

The coccygeal plexus is distributed to the coccygeus muscle, part of the levator ani muscle, the sacrococcygeal symphysis, and (via the anococcygeal nerve) a small area of skin between the tip of the coccyx, and the anus.