The ventral rami of the 4th and 5th sacral nerves and the coccygeal nerve form a fine network on the coccygeus muscle, the coccygeal plexus.
Anatomy
The anococcygeal nerves arise from the coccygeal plexus and provide sensory innervation to the skin over the coccyx and between the coccyx and anus[^1].
Clinical relevance
A lesion of the coccygeal plexus or the anococcygeal nerves can lead to Coccydynia[^2].