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9 Cards in this Set
- Front
- Back
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What anatomic line lies at the base of the foramen magnum? What is its clinical significance?
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McRae's line across the base of the foramen magnum
Odontoid should always be below this line (if not, then invagination is present) |
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What is the most important operative indication for invagination?
Other indications include . . . |
Neurologic compromise
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. . . Migration in excess of?
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>5 mm
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. . .Cervicomedullary angle (CMA)?
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>135 degrees
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. . .Ranawat measurement?
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<13 mm
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. . .McRae's line?
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Odontoid proximal to McRae's line
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What two surgical options are appropriate for basilar invagination?
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Occiput to C2 fusion
Transoral odontoid resection |
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What are the only two classic symptoms of atlantoaxial arthritis? What is the treatment?
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Headache
Rotational pain Treatment: posterior C1-2 fusion |
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What are the only two current indications for a transoral approach?
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Cranial nerve deficits (brainstem compromise)
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