Extension lateral cervical spine radiograph showing normal alignment of the upper cervical spine. Extension lateral cervical spine radiograph showing.

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Presentation transcript:

Extension lateral cervical spine radiograph showing normal alignment of the upper cervical spine. Extension lateral cervical spine radiograph showing normal alignment of the upper cervical spine. Flexion lateral cervical spine radiograph; the measurement of the deformity is the same as in fig 1, with anterolisthesis of C2 on C3 of 3 mm and the posterior arch of C2 lies 2 mm from the posterior cervical line drawn from C1 to C3. P Curtin, and J McElwain Emerg Med J 2005;22:907-908 Copyright © BMJ Publishing Group Ltd and the College of Emergency Medicine. All rights reserved.