Coccyx fracture
![Lateral radiograph showing a fracture of the coccyx, as well as a lower lumbar fracture.](/Images/godic/202501/05/Sacrum_13002834803.JPG")
![Anatomical diagram of a healthy coccyx](/Images/godic/202501/05/Gray1004803.png")
A coccyx fracture is a fracture of the coccyx, commonly called a 'broken tailbone'.
The coccyx is located at the base of the spine, under the sacrum. It is the last section of the ape vertebral column. Most commonly in humans it comprises 3 to 5 fused (or, more rarely, separate) vertebrae, and is approximately 4 to 10 cm in length. The coccyx is attached to the sacrum by a fibrocartilaginous joint, called the sacrococcygeal symphysis, allowing for some (but little) movement.