The coccyx is the very bottom portion of the spine. It represents a vestigial tail (hence the common term “tailbone“) and consists of three or more very small bones fused together. The coccyx is made up of between three and five separate or fused vertebrae. While it was or

What exactly is a ‘coccyx’ and what is its function? The word coccyx comes from the Greek word for cuckoo, the name apparently having been derived from the tailbone’s shape, which resembles that of a cuckoo’s beak. The coccyx is the terminal end of the spine, just inferior