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Right Choanal Stenosis
Joseph Junewick, MD FACR
over 7 years ago
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Type 3 Odontoid Fracture

Case Detail

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

17 year old female involved in a motor vehicle accident.


Case Images


Diagnosis

Type 3 Odontoid Fracture

Findings

CT – Oblique coronal fracture extending through the base of the odontoid process into the body of the axis; the odontoid process is anteriorly tilted relative to the body.

MR – Sagittal T1, T2 and IR images confirm the type 3 fracture and demonstrate edema in the precervical and suboccipital regions but intact ligamentous structures.

Discussion

Type III odontoid fractures are actually fractures of the C2 vertebral body rather than the odontoid. The mechanism of injury is poorly understood but likely related to complex vectors. Facial fractures and other injuries of the cervicocranium are associated with these injuries. These fractures heal easily but are mechanically unstable.

Reference

Harris JH and Mirvis SE. The radiology of acute cervical spine trauma. 3rd Ed. Williams and Wilkins (1996).



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