What is apical ligament dens?
The apical ligament is a small ligament that joins the apex (tip) of the dens of C2 to the anterior margin (basion) of the foramen magnum. It is the weak, fibrous remnant of the notochord and does not contribute significantly to stability.
What is calcified nuchal ligament?
Calcification of the alar ligament is a rare condition, which usually develops in the elderly and tends to occur following traumatic injury or as a consequence of inflammatory disease. In crowned dens syndrome, calcium pyrophosphate dehydrate crystals deposit on the atlantoaxial joint.
What are dens ligaments?
Anatomical terminology. 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.
What ligament attaches to the dens?
In anatomy, the alar ligaments are ligaments which connect the dens (a bony protrusion on the second cervical vertebra) to tubercles on the medial side of the occipital condyle.
What is the purpose of the apical ligament?
T he anatomy and function of the apical ligament (middle odontoid ligament, suspensory ligament), which lies between the alar ligaments and attaches the tip of the odontoid process of the axis to the basion, have infrequently been described, but this ligament has been ascribed a functional role in craniocervical …
What does the apical ligament do?
What causes ligament calcification?
The wear-and-tear of aging is the primary cause of degenerative calcification. As we age, blood flow to the tendons decreases. This makes the tendons weaker, and over time, as we use the affected joint, the fibers of the tendons begin to fray and tear, just like a worn-out rope.
What is calcification process?
Calcification is a process in which calcium builds up in body tissue, causing the tissue to harden. This can be a normal or abnormal process.
Where are the Denticulate ligaments?
Denticulate ligaments arise from the pia mater on the lateral edge of the spinal cord and fuse to the overlying dura mater and the filum terminale extends from the conus medullaris to the end of the dural sac in order to anchor the inferior tip of the spinal cord.
What do alar ligaments do?
The alar ligaments are fibrous cords that attach to the dens bilaterally and insert on the base of the skull. They function to limit axial rotation and lateral bending on the contralateral side, and flexion secondarily [1-2].
What is the role of the Intertransverse ligaments?
The intertransverse ligaments are ligaments that are placed between the transverse processes of the spine. In the cervical region they consist of a few irregular, scattered fibers that are often replaced by muscles. The function of the intertransverse ligaments is to limit lateral flexion of the spine.
Where is the apical ligament located?
Where is the apical ligament of dens located?
A narrow band of fibrous tissue extending from the apex of the dens to the anterior margin of the foramen magnum between the alar ligaments, merging with the deep anterior atlanto-occipital membrane and superior crus of the transverse ligament of the atlas. Segen’s Medical Dictionary. © 2012 Farlex, Inc.
Which is stronger apical ligament or anterior alar ligament?
The apical ligament is a small ligament that joins the apex (tip) of the dens of C2 to the anterior margin (basion) of the foramen magnum. It is the weak, fibrous remnant of the notochord and does not contribute significantly to stability. The more posterior alar and cruciate ligaments are stronger and therefore far more clinically significant.
Where does the apical ligament join the foramen magnum?
Apical ligament. Dr Roland Warner and Dr Aaron Wong et al. The apical ligament is a small ligament that joins the apex (tip) of the dens of C2 to the anterior margin (basion) of the foramen magnum. It is the weak, fibrous remnant of the notochord and does not contribute significantly to stability.
Can a calcification occur in a periodontal ligament?
Calcification can also, however, occur in any of the periodontal ligaments including the vertical band of the cruciform ligament, alar ligament , and apical ligament 2 . There is usually soft tissue thickening which is nonenhancing 4 .