(1) The sacrum itself represents 5 fused bones, and the coccyx another vestigial 2-3 or more - the remains of the ancestral tail.(2) Many of my patients have pressure ulcers on the coccyx or sacrum.(3) The spinal column is composed of seven cervical vertebrae, twelve thoracic vertebrae, five lumbar vertebrae, the bony sacrum, and the coccyx .(4) For that matter an injury to the spine or the coccyx also qualifies as affecting the automatic nervous system.(5) From splintered bones in the coccyx , she was bedridden for nearly two years.(6) Blood samples were collected every 7 days by coccygeal venipuncture from May 11 to September 5.(7) The paper stated that u2018an air-sac diverticulum extends from the second cervical to the fourth free coccygeal vertebra, lateral to the vertebral column.u2019(8) The lumbosacral plexus is formed by the union of the anterior primary divisions of the lumbar, sacral, and coccygeal nerves.(9) The fifth sacral and the coccygeal nerves (when present) are located within the dural cavity.(10) The usual grouping formula of 7 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 4 coccygeal vertebrae is found in only about 20% of individuals studied.
