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Radiological Signs in Traumatic Cervical Facet Joint Dislocations

Authors
  • Leong, Natalie1
  • Lim, Ernest1
  • Ho, Chi Long2, 3
  • 1 National University of Singapore, SG
  • 2 Sengkang General Hospital, SG
  • 3 Duke NUS Medical School, SG
Type
Published Article
Journal
Journal of the Belgian Society of Radiology
Publisher
Ubiquity Press
Publication Date
Feb 16, 2021
Volume
105
Issue
1
Identifiers
DOI: 10.5334/jbsr.2314
PMID: 33634236
PMCID: PMC7894363
Source
PubMed Central
Keywords
License
Green
External links

Abstract

Unilateral cervical facet joint dislocation (UCFJD) is the most frequently missed cervical spine injury on plain radiographs. If left untreated, UCFJD can progress to bilateral cervical facet joint dislocation. Given the complexity of cervical facet joint dislocations, radiologists rely on metaphorical signs to identify them on radiographs. The “Bow-tie” and “laminar space” signs represent UCFJD on plain radiographs. The “reversed hamburger”, “naked facet” and “headphones” signs represent cervical facet joint dislocations on axial cross-sectional imaging. Illustrating these signs in an engaging manner facilitates pattern-based recognition, which can benefit trainees and radiologists. Moreover, pattern-based recognition can be applied to machine learning.

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