<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>: A transverse fracture across the floor of the skull, usually called a hinge fracture, is sometimes referred to as motorcyclist fracture. At autopsy, the base of the skull may be appreciated to have divided into two halves, each moving independently of each other like a hinge, the so-called motorcyclist fracture. 