title: ED use of flexion-extension cervical spine radiography in the evaluation of blunt trauma.
abstract: Dynamic cervical spine radiography (CSR) is used to detect ligamentous instability. We investigated the ED use of dynamic CSR through a retrospective descriptive review using a convenience sample study design at a university emergency department. Adult blunt trauma patients with static (lateral, AP, odontoid) and dynamic (flex, extend) CSR participated. 451 patients (52% male with mean age of 33.6 years) met entry criteria. Injury mechanisms were 74% MVA, 12% fall, 8% direct trauma, and 6% other. Indications for dynamic CSR were 100% traumatic mechanism, 86% neck pain, 70% midline neck tenderness, and 18% abnormal static CSR. Static CSR were normal in 372, 5 of which had abnormal dynamic CSR (5 cervical contour line disruption [CCLD], 2 posterior element abnormality [PEA]); of these 5 patients, none required invasive stabilization. Static CSR were abnormal in 79 patients (38 CCLD, 30 lordotic curve reversal, 17 PEA, 4 soft tissue swelling) of which 16 had abnormal dynamic CSR (9 increased CCLD, 4 PEA, and 4 fracture); of these 16 patients, 4 required invasive stabilization. Final diagnoses were 428 cervical soft tissue injury, 11 subluxation, 8 fracture, 2 fracture-subluxation, and 2 spinal cord injury without radiographic abnormality. Spine consultation was made in 12%. Stabilization therapy was required: 21 soft collar, 4 surgical, 3 halo-device, and 5 other. No complications of dynamic CSR were noted. The blunt trauma patient with neck complaints and an abnormal static CSR was more likely to have an abnormal dynamic CSR demonstrating a cervical injury requiring stabilization compared to patients with normal static CSR.
authors.affiliation: Department of Emergency Medicine, University of Virginia School of Medicine, Charlottesville 22908, USA.
authors.forename: W J
authors.initials: WJ
authors.lastname: Brady
authors.forename: J
authors.initials: J
authors.lastname: Moghtader
authors.forename: D
authors.initials: D
authors.lastname: Cutcher
authors.forename: C
authors.initials: C
authors.lastname: Exline
authors.forename: J
authors.initials: J
authors.lastname: Young
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D019838:Neck Injuries / Q000000981:diagnostic imaging*; D011859:Radiography / Q000379:methods; D012189:Retrospective Studies; D013124:Spinal Injuries / Q000000981:diagnostic imaging*; D014911:Whiplash Injuries / Q000000981:diagnostic imaging; D014949:Wounds, Nonpenetrating / Q000000981:diagnostic imaging*