PMC9559964_01
CT scan pre op: demonstrate severe bilateral fractures' edge gap.
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Urgent cervical CT-scan detected bilateral lateral mass fractures of C1 (type IV according to Gehweiler classification), more severe at right side with gap between the fracture's edges of approximately 8-mm (Fig. 1, Fig. 2) whereas on the left side the space was around 3.5 mm.
(A-B) CT scan pre-op sagittal and coronal view respectively; (C-D) Cervical-MR: demonstrate no ligament damage.
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Also Magnetic Resonance Scan showed intact cranio-cervical ligaments (Fig. 2).