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Question 1816

Question contributed by Andrew Dixon ◉

Disclosures and question data

Which is NOT part of Steele’s rule of thirds for the normal dimensions of the upper cervical canal at C1?

one third of the canal is occupied by cerebrospinal fluid

one third of the canal is occupied by epidural fat

one third of the canal is occupied by the dens

one third of the canal is occupied by the cord

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