Traumatic embolism of the vertebral artery is a serious complicating symptom of cervical contusion. Transient symptoms occur due to tortuosity, spasm, and compression of the vertebral artery as a result of a change in the position of the cervical spine. It can also result in secondary thrombosis due to strong strain or tearing of the vertebral artery. First, we will introduce how to diagnose vertebral artery tortuosity spasm. 1.History A history of recent cervical contusion or external forces acting on the neck. 2.Clinical manifestations Regardless of the presence of cervical fracture or dislocation, as long as there are symptoms of brainstem ischemia or cervical spinal cord ischemia, and neurological examination showing cerebellar and brainstem lesions, the injury of vertebral artery should be highly alerted. 3. Auxiliary examination for diagnosis Quadriplegia occurs quickly and to a great extent, and the symptoms of the long tract of the spinal cord are more obvious, and the recovery process of symptoms is also very slow. In tetraplegia caused by vertebral artery embolism, the upper extremity is heavier than the lower extremity, accompanied by mild or no long tract sensory symptoms, and the recovery process is faster. However, if the cervical spinal cord has been ischemic for too long after the injury, the spinal cord damage is more severe and irreversible.