The following risk factors have been identified for<unk> : * Lack of/reduced muscle mass * Advanced age * Osteoporosis * Being of the female sex (due to the wider pelvis typically found in females) * Violence Symptoms of<unk>  include: * Pain that increases in severity when sitting or getting up from a chair, or when experiencing bowel movement * Provoked pain over the tailbone * Nausea * Bruising or swelling in the tailbone area
Coccyx fracture
Sacral fracture
Hume fracture
Bosworth fracture
Scaphoid fracture
Monteggia fracture
Cuboid fracture
Pilon fracture