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Joseph Junewick, MD FACR
over 8 years ago
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Unilateral Interfacetal Fracture Dislocation

Case Detail

Anatomy: Brain-Spine
Junewick
Joseph Junewick, MD FACR
Diagnostic Category: Trauma
Created: over 7 years ago
Updated: over 7 years ago
Tags: PEDS
Modality/Study Types: MR CT
Activities:
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History

13 year old male in motor vehicle accident.


Case Images


Diagnosis

Unilateral Interfacetal Fracture Dislocation

Findings

CT – Axial images with sagittal reformats demonstrate unilateral locked facet on the right at C3-C4, right pedicle/facet fracture, anterior translation of C3 relative to C4, and avulsion of the posterior longitudinal ligament at C3.

MR – Sagittal IR and axial T1 and T2 images show injuries of the posterior ligamentous complex, posterior displacement of the posterior longitudinal ligament, precervical edema, and absence of the right vertebral artery flow void.

Discussion

Unilateral facet fracture dislocation is the result of hyperflexion and rotation. This injury is mechanically stable while unreduced but becomes unstable with reduction. Vertebral artery injuries are very common.



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