Alar ligament calcification


The alar ligaments arise from both sides of the tip of the odontoid process and run obliquely cephalad to insert on the medial surface of the occipital condyles 1,2,3. Calcification of the alar ligament is rare 1-4. This condition should be differentiated from fractures of craniovertebral junction, as well as from crowned dens syndrome 1,4.

The present case illustrates the typical features of focal calcification in the right alar ligament, associated with neck pain.