Structure
The apical ligament of the dens is a fibrous cord-like ligament that supports the craniocervical joint by stabilizing the location of the dens by attachment to the occipital bone.
Related parts of the anatomy
Anatomical Relations
The apical ligament of the dens runs from the apex of the dens (C2) superiorly to the anterior lip of the foramen magnum on the basilar part of the occipital bone.
Function
The apical ligaments firm attachment to the apex of the dens anchors this craniocervical joint and prevents displacement of the dens posteriorly.
List of Clinical Correlates
—Craniocervical junction injuries
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Odontoid Process
Separation of the odontoid process from the body of the axis – this may represent a congenital failure of fusion, or a previous fracture of the odontoid synchondrosis before its closure
