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Open Mouth Odontoid
- Adequate film criteria
- Entire odontoid and lateral borders of C1-C2 seen
- Alignment
- Lateral borders of c1 and c2 vertebrae should line up
- Vertebral landmarks shifted in on one side
- Should be shifted out on other side
- Bony Margins
- Odontoid should have uninterrupted cortex to C2
- Odontoid view C1 and C2 should line up