Chamberlain Line on Radiographic Image
Summary:
- The Chamberlain line is drawn from the posterior surface of the hard palate to the tip of the opisthion (posterior aspect of the foramen magnum).
- It is used to measure the distance of how much the odontoid tip extends above this line. If the tip of the dens extends > 3 mm above this line then it helps to recognize the presence of basilar invagination (a craniocervical junction abnormality where the tip of the dens project up into the foramen magnum).
Chamberlain's Line
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