Anterior longitudinal ligament

The anterior longitudinal ligament is a ligament that runs down the anterior surface of the spine. It traverses all of the vertebral bodies and intervertebral discs.

Anterior longitudinal ligament
Median sagittal section of two lumbar vertebræ and their ligaments. (Anterior longitudinal ligament runs vertically at center left.)
Anterior atlantoöccipital membrane and atlantoaxial ligament. (Anterior longitudinal ligament runs vertically at bottom center.)
Details
From	Inferior Basilar Portion of Occipital Bone
To	Sacrum
Identifiers
Latin	ligamentum longitudinale anterius
TA	A03.2.01.007
FMA	31893
Anatomical terminology

The ligament is thick and slightly more narrow over the vertebral bodies and thinner but slightly wider over the intervertebral discs which is much less pronounced than that seen in the posterior longitudinal ligament. The ligament actually has three layers: superficial, intermediate and deep. The superficial layer traverses 3 – 4 vertebrae, the intermediate layer covers 2 – 3 and the deep layer is only between individual vertebrae.