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In anatomy, the transverse ligament of the atlas is a broad, tough ligament which arches across the ring of the atlas (first cervical vertebra) posterior to the dens [1] to keep the dens (odontoid process) in contact with the atlas. [citation needed] It forms the transverse component of the cruciform ligament of atlas.
The cruciate ligament of the atlas (cruciform ligament) is a cross-shaped (thus the name) ligament in the neck forming part of the atlanto-axial joint. It consists of the transverse ligament of atlas, a superior longitudinal band, and an inferior longitudinal band. The cruciate ligament of the atlas prevents abnormal movement of the atlanto ...
Just below the medial margin of each superior facet is a small tubercle, for the attachment of the transverse atlantal ligament which stretches across the ring of the atlas and divides the vertebral foramen into two unequal parts: the anterior or smaller receiving the odontoid process of the axis
The membrane situated is posterior/deep to the transverse ligament of the atlas; the two are separated by a thin intervening layer of loose areolar connective tissue, and sometimes by a bursa. [2] The membrane is situated anterior/superficially to the spinal dura mater (which is firmly attached to the tectorial membrane). [3]
Transverse ligament: Should the transverse ligament of the atlas fail due to trauma or disease, the dens is no longer anchored and can travel up the cervical spine, causing paralysis. If it reaches the medulla death can result.
The posterior atlantoaxial ligament is a broad, thin membrane attached, above, to the lower border of the posterior arch of the atlas; below, to the upper edges of the laminæ of the axis. It supplies the place of the ligamenta flava , and is in relation, behind, with the obliqui capitis inferiores .