title: Cervical spine hyperextension injuries: MR findings.
abstract: Cervical hyperextension injuries are common and often show minimal radiographic abnormalities, even with severe or unstable lesions. Fourteen patients, nine with acceleration hyperextension "whiplash" injuries and five injured by direct frontal head trauma, underwent magnetic resonance (MR) imaging within 4 months of injury. Five of seven patients with anterior spinal column injuries showed characteristic separation of the disk from the vertebral end plate, lesions still evident as late as 9 months after injury. The demonstration of this type of lesion and its delayed resolution may have prognostic and surgical implications. These lesions, anterior longitudinal ligament injuries, anterior annular tears, and occult anterior vertebral end-plate fractures usually occurred at multiple levels except when preexistent degenerative disk narrowing reduced spine mobility. Seven patients had acute cervical disk herniations causing cord impingement. Radiographically occult injuries are well demonstrated with MR imaging, and findings correspond to previously described surgical and anatomical pathologic conditions.
authors.affiliation: Memorial Magnetic Resonance Center, Long Beach Memorial Hospital, Calif.
authors.forename: S J
authors.initials: SJ
authors.lastname: Davis
authors.forename: L M
authors.initials: LM
authors.lastname: Teresi
authors.forename: W G
authors.initials: WG
authors.lastname: Bradley
authors.forename: M A
authors.initials: MA
authors.lastname: Ziemba
authors.forename: A E
authors.initials: AE
authors.lastname: Bloze
mesh_terms: D000328:Adult; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging / Q000293:injuries* / Q000473:pathology; D006259:Craniocerebral Trauma / Q000150:complications; D005260:Female; D006801:Humans; D007403:Intervertebral Disc / Q000000981:diagnostic imaging / Q000293:injuries / Q000473:pathology; D007405:Intervertebral Disc Displacement / Q000175:diagnosis / Q000000981:diagnostic imaging; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011859:Radiography; D013119:Spinal Cord Injuries / Q000175:diagnosis / Q000000981:diagnostic imaging; D016103:Spinal Fractures / Q000175:diagnosis / Q000000981:diagnostic imaging; D014911:Whiplash Injuries / Q000000981:diagnostic imaging / Q000473:pathology