The longitudinal ligaments are two sets of ligaments that run along the spine.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/9/92/Gray301.png/220px-Gray301.png)
These are:
- Anterior longitudinal ligament (ligamentum longitudinale anterius), which runs down the anterior surface of the spine
- Posterior longitudinal ligament (ligamentum longitudinale posterius), which is situated within the vertebral canal, and extends along the posterior surfaces of the bodies of the vertebrae