This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Spinal Injuries, Subject name: Orthopaedics
Hinge fracture is seen in: 
Select and explain. 
A. Wrist, B. Mandible, C. Basilar skull fracture, D. Cl vertebra fracture
C: Basilar skull fracture
Answer: C: Basilar skull fracture 
Explanation: Ref: Apleys System of Orthopaedics and Fractures, 9th editionExplanation:HINGE FRACTUREBasilar fracture of skull.Involves middle cranial fossa and pituitary fossa.Divides the skull into anterior and posterior segments.Mechanism of injuryo Blow to chin, e.g. Boxingo Motor-cycle accident - Due to impact on the chin during the fall.JEFFERSON FRACTUREBurst fracture of Atlas I Cl vertebra).Lower incidence of spinal cord injury when compared to burst fractures of the other vertebrae.This is due to absence of vertebral body in Cl vertebra.