title: Vertebral artery injury after cervical spine trauma: A prospective study using computed tomographic angiography.
abstract: BACKGROUND
  Although the vertebral artery injuries (VAI) associated with cervical spine trauma are usually clinically occult, they may cause fatal ischemic damage to the brain stem and cerebellum.
  
  
  METHODS
  We performed a prospective study using computed tomographic angiography (CTA) to determine the frequency of VAI associated with cervical spine injuries and investigate the clinical and radiological characteristics. Between January 2005 and August 2007, 99 consecutive patients with cervical spine fractures and/or dislocations were prospectively evaluated for patency of the VA, using the CTA, at the time of injury.
  
  
  RESULTS
  Complete disruption of blood flow through the VA was demonstrated in seven patients with unilateral occlusion (7.1%). There were four men and three women with a mean age of 43 (range, 33-55 years). Unilateral occlusion of the right vertebral artery occurred in four patients and of the left in three. Regarding the cervical injury type, two cases were cervical burst fractures (C6 and C7), two had C4-5 fracture/dislocations, two had a unilateral transverse foraminal fracture, and one had dens type III fracture. All patients presented with good patency of the contralateral VA. None of the patients developed secondary neurological deterioration due to vertebrobasilar ischemia during the follow-up period with a mean duration of 23 months.
  
  
  CONCLUSIONS
  VAI should be suspected in patients with cervical trauma that have cervical spine fractures and/or dislocations or transverse foramen fractures. CTA was useful as a rapid diagnostic method for ruling out VAI after cervical spine trauma.
authors.affiliation: Department of Neurosurgery, Chonnam National University Medical School and Research Institute of Medical Sciences, Gwangju, Republic of Korea.
authors.forename: Jae-Won
authors.initials: JW
authors.lastname: Jang
authors.forename: Jung-Kil
authors.initials: JK
authors.lastname: Lee
authors.forename: Hyuk
authors.initials: H
authors.lastname: Hur
authors.forename: Bo-Ra
authors.initials: BR
authors.lastname: Seo
authors.forename: Jae-Hyun
authors.initials: JH
authors.lastname: Lee
authors.forename: Soo-Han
authors.initials: SH
authors.lastname: Kim