File:Atlas (type 3b subtype 1) and axis (Anderson and D'Alonzo type 3, Roy-Camille type 2) fractures (Radiopaedia 88043-104607 Coronal bone window 49).jpg

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Atlas_(type_3b_subtype_1)_and_axis_(Anderson_and_D'Alonzo_type_3,_Roy-Camille_type_2)_fractures_(Radiopaedia_88043-104607_Coronal_bone_window_49).jpg ‎(560 × 535 pixels, file size: 144 KB, MIME type: image/jpeg)

Summary:

Description
  • Radiopaedia case ID: 88043
  • Image ID: 54711786
  • Image stack position: 49/76
  • Plane projection: Coronal
  • Aux modality: bone window
  • Modality: CT
  • System: Trauma
  • Findings: Comminuted fracture of C1 involving the anterior arch, left lateral mass, and the posterior elements. Small fracture of the posterior arch of C1 is also noted. Resultant incongruent articulation of the lateral mass of C1/C2. Posteriorly slanted oblique fracture of the odontoid process at the base, with posterior angulation of the dens and retropulsion. Moderate narrowing of the central canal at this level due to angulation of the odontoid process and suspected ligamentous thickening/ hematoma. Moderate degree of central spinal canal stenosis. Prior surgical fusion at C5/C6, with suspected disc material at this level.Advanced bilateral facet joint degenerations are present at multiple levels. There is severe bilateral C4/C5 neural foraminal stenosis with suspected impingement of the C5 nerve root.No abnormal prevertebral soft tissue swelling seen.Dystrophic calcification over the ligamentum nuchae is thought to reflect sequelae of previous trauma.Mild stranding along the left sternocleidomastoid muscle noted. IMPRESSION
Date Published: 25th Mar 2021
Source https://radiopaedia.org/cases/atlas-type-3b-subtype-1-and-axis-anderson-and-dalonzo-type-3-roy-camille-type-2-fractures
Author Craig Hacking
Permission
(Permission-reusing-text)		 http://creativecommons.org/licenses/by-nc-sa/3.0/

Licensing:

Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0)

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