PMC3589859_01
CT spine showing, sagittal (a) and axial (b-d) views of the bone defect in the anterior arch of C1
JETS-6-47-g001.jpg
PMC3589859_01_JETS-6-47-g001.jpg
F1
A cervical computed tomography (CT) scan, not only demonstrated an anterior small defect of the arch on its left side, with tiny bony fragments in the middle of the defect, but also a posterior rim defect at the level of the C1 tuberculum [Figure 1].
Spinal T2 Weighted MR Imaging: Sagittal (a) and axial (b) views do not show any evidence of hyperintensity suggestive of a recent trauma, concurrent with the C1 defect
JETS-6-47-g002.jpg
PMC3589859_01_JETS-6-47-g002.jpg
F2
A non-traumatic origin was sustained by cervical magnetic resonance imaging (MRI), which excluded the presence of blood and edema near the bony defect on T2 Weighted imaging [Figure 2].
Flexion (a) and extension (b) cervical X-rays do not show any evidence of abnormal movements
JETS-6-47-g003.jpg
PMC3589859_01_JETS-6-47-g003.jpg
F3
Furthermore, a flexion-extension cervical X-ray [Figure 3] definitely excluded the presence of abnormal movements.