Imaging of the Cervical Spine > Interpretation > Cartilaginous Space

Cartilaginous Space

The Predental space (distance from dens to C1 body) should not measure more than 3 mm in adults and 5mm in children. If the space is increased, a fracture of the Odontoid process or disruption of the transverse ligament is likely. If fracture is suspected, CT should be obtained. If ligamentous disruption is suspected, a MRI should be obtained.

Question: Question: Predental space should be:
A. < 3 mm in adults.
B. < 5 mm in adults.
C. < 10 mm in children.

Answer: A