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The internal structure of the odontoid process is more compact than that of the body. The odontoid peg is the ascension of the atlas fused to the ascension of the axis. The peg has an articular facet at its front and forms part of a joint with the anterior arch of the atlas. It is a non-weight bearing joint.
The C2 fracture accounts for nearly 19% of spinal fractures [10] and 55% of cervical fractures (in patients with head injury). Within C2 fractures, the hangman's fracture accounts for 23% of occurrences while the odontoid or dens fracture accounts for 55% of them.
A cervical fracture, commonly called a broken neck, is a fracture of any of the seven cervical vertebrae in the neck. Examples of common causes in humans are traffic ...
The ligament of apex dentis (or apical odontoid ligament) is a ligament that spans between the second cervical vertebra in the neck and the skull.It lies as a fibrous cord in the triangular interval between the alar ligaments, which extends from the tip of the odontoid process on the axis to the anterior margin of the foramen magnum, being intimately blended with the deep portion of the ...
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.
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Because of its proximity to the brain stem and importance in stabilization, fracture or injury to the atlanto-axial joint can cause serious problems. Common trauma and pathologies include (but are not limited to): The dens: significant depression on the skull can push the dens into the brainstem, causing death. The dens itself is vulnerable to ...
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