title: Are upright lateral cervical radiographs in the obtunded trauma patient useful? A retrospective study.
abstract: BACKGROUND
  The best method for radiographic "clearance" of the cervical spine in obtunded patients prior to removal of cervical immobilization devices remains debated. Dynamic radiographs or MRI are thought to demonstrate unstable injuries, but can be expensive and cumbersome to obtain. An upright lateral cervical radiograph (ULCR) was performed in selected patients to investigate whether this study could provide this same information, to enable removal of cervical immobilization devices in the multiple trauma patient.
  
  
  METHODS
  We retrospectively reviewed our experience with ULCR in 683 blunt trauma victims who presented over a 3-year period, with either a Glasgow Coma Score <13 or who were intubated at the time of presentation.
  
  
  RESULTS
  ULCR was performed in 163 patients. Seven patients had studies interpreted to be abnormal, of which six were also abnormal, by either CT or MRI. The seventh patient's only abnormality was soft tissue swelling; MRI was otherwise normal. Six patients had ULCR interpreted as normal, but had abnormalities on either CT or MRI. None of the missed injuries required surgical stabilization, although one had a vertebral artery injury demonstrated on subsequent angiography. ULCR had an apparent sensitivity of 45.5% and specificity of 71.4%.
  
  
  CONCLUSIONS
  ULCR are inferior to both CT and MRI in the detection of cervical injury in patients with normal plain radiographs. We therefore cannot recommend the use of ULCR in the obtunded trauma patient.
authors.affiliation: Department of Neurosurgery, Denver Health Medical Center, University of Colorado School of Medicine, Denver, CO, USA. Craig.Rabb@dhha.org
authors.forename: Craig H
authors.initials: CH
authors.lastname: Rabb
authors.forename: Jeffrey L
authors.initials: JL
authors.lastname: Johnson
authors.forename: David
authors.initials: D
authors.lastname: VanSickle
authors.forename: Kathryn
authors.initials: K
authors.lastname: Beauchamp
authors.forename: Gene
authors.initials: G
authors.lastname: Bolles
authors.forename: Ernest E
authors.initials: EE
authors.lastname: Moore