McRae line
Updates to Article Attributes
Body
was changed:
McRae line is a radiographic line drawn on a lateral skull radiograph or on a midsagittal section of CT or MRI that connects the anterior and posterior margins of the foramen magnum (basion to opisthion).
Significance
- indicates the presence of basilar invagination (atlantoaxial impaction): the tip of the odontoid process is normally about 5 mm below this line; basilar invagination is diagnosed when the tip crosses this line
- helps to measure the cerebellar tonsillar position: normal is above the foramen magnum
See also
-<li><a href="/articles/digastric-line">Digastric line</a></li>-<li><a href="/articles/bimastoid-line">Bimastoid line</a></li>- +<li><a href="/articles/digastric-line">digastric line</a></li>
- +<li><a href="/articles/bimastoid-line">bimastoid line</a></li>
Unable to process the form. Check for errors and try again.