Pediatric Basilar Invagination

Etiology: Congenital
Imaging:
— Odontoid process greater than 3mm above Chamberlain’s line (line drawn between hard palate and opisthion)
— Ventral compression of cervicomedullary junction
DDX:
Complications:
Treatment:
Clinical:

Radiology Cases of Basilar Invagination

CT of basilar invagination — Sagittal CT without contrast of the cervical spine shows the tip of the dens is 6 mm above Chamberlain’s line.

Radiograph of basilar invagination in osteogenesis imperfecta — Lateral radiograph of the cervical spine shows the tip of the dens extends well above Chamberlain’s line.