Atlas Fracture: A fracture of the first cervical vertebra (C1), which can lead to instability in the upper cervical spine. Transverse Atlantal Ligament (TAL): A ligament that stabilizes the atlas ...

The upper cervical spine, specifically, is the top vertebrae of the spine. It is made up of the atlas (C1) and the axis (C2). These vertebrae are atypical and are different in shape and function ...