Plain CT
- will help identify bony deformity such as facet arthrosis
- Vacuum disk phenomena implies motion through a disk space
- Facet and pedicle morphology
- Paramount in revision cases:
- Check implants subsidence and movement
- Laminectomies
- Fusion
CT myelogram
- most useful for assessing stenosis and bony anatomy as rotation makes interpretation of MRI difficult
- better appreciation of bony anatomy and rotational deformity than MRI
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