Motorcyclist's fracture is:
Motor Cyclists fracture (Hinged fracture): Transverse fracture across base of skull leading to separation into anterior- posterior.
Spinal Injury
Stellate fracture across base of skull
Transverse fracture across base of skull
Lamina fracture of C7 veebra
Spinous process fracture of C7 veebra
Transverse fracture across base of skull