year 2, Issue 1 (8-2016)                   jicr 2016, 2(1): 160-162 | Back to browse issues page

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nazemirafie A. Unilateral locked facet after cervical spinal column trauma:The Rule of Cervical Spine CT scan. jicr. 2016; 2 (1) :160-162
Abstract:   (1207 Views)

Unilateral Locked Facet after Cervical Spinal Column Trauma: The Rule of Cervical Spine CT scan


Background: Because there is often only minimal displacement at the site of dislocation in unilateral locked facet, it is possible not only to miss the locking of facets but also even to conclude that no fracture or dislocation is present. If the diagnosis is not promptly made, neurological recovery will be impaired and deformity will result.

Materials and Methods:

 We review 450 patients with cervical spinal column trauma. Patients with and with focal neurological deficit. All patients underwent AP and lateral cervical radiography. Patients with sever local tenderness ,focal neurological deficit ,limited cervical movement or abnormal simple radiography underwent CT scan with sagittal and coronal reconstruction .


 Fifty of cases (11%) had unilateral locked facets. Translation of the cervical vertebral body above the level of dislocation results in a diagnostic appearance on the lateral views .Translations  were so minimal or adjacent to cervicothoracic junction  in one-forth of cases that had missed in primary evaluation. Rotation of the spinous processes was observed in the Ap view in only half of the cases. All missed cases demonstrated on CT-scan with sagittal and coronal reconstruction.


The necessity of obtaining CT-scan with sagittal and coronal reconstruction which adequately demonstrate the cervical spine locked facet is emphasized.

Keywords: locked facet, missed patients, cervical AP and lateral radiography

Full-Text [PDF 731 kb]   (349 Downloads)    
Type of Study: Research | Subject: Special
Received: 2016/01/30 | Accepted: 2016/07/12 | Published: 2016/08/27

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