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 ...

Craniovertebral Junction (CVJ): The area where the skull (occiput) meets the first two cervical vertebrae (atlas and axis), crucial for head movement and stability. Atlanto-occipital Dislocation ...