Assessment of basilar invagination

Case contributed by Dr Prashant Mudgal
Diagram

Frontal Image

  • Digastric linetip of odontoid process is normally located 11 mm below this line.
  • Bimastoid linetip of odontoid process projects normally not more than 10 mm above this line.

Lateral Image

  • McRae linetip of odontoid process normally projects below this line
  • Chamberlain linetip of odontoid process projects normally not more than 3 mm above this line.
  • McGregor linetip of odontoid process projects normally not more than 5 mm above this line.
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Case information

rID: 27181
Case created: 22nd Jan 2014
Last edited: 10th Dec 2015
System: Head & Neck
Inclusion in quiz mode: Included

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