The odontoid process, or dens, is a superior projecting bony element from the second cervical vertebrae (C2, or the axis). The first cervical vertebrae (atlas) rotates around the odontoid process to provide the largest single component of lateral rotation of the cervical spine.

Which vertebra is odontoid process?

The odontoid process (also dens or odontoid peg) is a protuberance (process or projection) of the Axis (second cervical vertebra). It exhibits a slight constriction or neck, where it joins the main body of the vertebra.

Does C1 have odontoid process?

NORMAL ANATOMY AND TECHNIQUES

In this atlas viewed from the anterior perspective, the odontoid process is the “purloined” embryologic centrum of C1, which is incorporated into C2, giving C2 its unique morphology.