<prompt> Which of the following skull fractures is called a motorcyclists fracture -Ring fracture of base of skullHinge fracture of base of skullComminuted fracture of skullDepressed fracture of skull  <response>: The synopsis of forensic medicine toxicology ;Dr k.s narayan reddy; 28th edition ; pg.no.151 In motorcyclist s fracture the fracture is seen at the base of the skull ,the base of skull is divided into two halves ,and each moves like a hinge . 