<prompt> Motor cyclist fracture among the followingHinge fracture of base of skullRing fracture of base of skullDepressed fracture of skullComminuted fracture of skull  <response>: Hinge fracture Motorcyclist fracture occurs when the linear fracture passes across the middle cranial fossa, separating the skull base into 2 halves, and may be caused by a heavy blow to the side of the head e.g. in motorcycle accidents. Ref - Krishnan Vij 5th edition pg 300 