Vertebral artery transection: an unusual lethal seat belt injury.

An 89-year-old man involved in a vehicle crash was found at autopsy to have a linear seat belt mark on the right side of his neck associated with extensive injuries of the right paraspinal muscles with fracture-dislocation and separation of cervical vertebrae 5 and 6. There was also fracture of the right facet joint between cervical vertebrae 5 and 6 and laceration of the right vertebral artery. Death was due to a cervical seat belt injury with spinal fracture and laceration of the right vertebral artery. The presence of extensive injuries to the right paraspinal muscles and cervical vertebra 5-6 fact joint beneath the seat belt mark would be in keeping with trauma due to the belt webbing, rather than mere hyperextension/flexion of the cervical spine. This report demonstrates a rare form of seat belt injury, transection of the vertebral artery, and suggests that the finding of seat belt markings on the lateral aspect of the neck should prompt examination for this type of lethal vascular injury at autopsy.