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The ligament broadens [1] and thickens [2] medially. The anterior medial aspect of the ligament is lined by a thin layer of articular cartilage. [1] The neck of the odontoid process is constricted where it is embraced posteriorly by the transverse ligament [2] so it retains the dens in position even after all other ligaments have been sectioned ...
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]
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 ...
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.
Diagnosis can be established using plain film x-rays as well as CT scan of the neck/cervical spine. Children with Down syndrome have inherently lax ligaments making them susceptible to this condition. In select cases, these children may require pre-operative imaging to assess the risk for complications after procedures such as adenoidectomy.
In the spine, there is bone formation along the anterior longitudinal ligament and sometimes the posterior longitudinal ligament, which may lead to partial or complete fusion of adjacent vertebrae. The facet and sacroiliac joints tend to be uninvolved. The thoracic spine is the most common level involved. [2]
The inferior corporotransverse ligament attaches at the posterolateral aspect of the body of one vertebra, and at the transverse process of the below vertebra. [1] The superior transforaminal ligament attaches along the inferior intervertebral notch (of the pedicle of the upper vertebra of the intervertebral foramen). [1]
In anatomy, the atlas (C1) is the most superior (first) cervical vertebra of the spine and is located in the neck. The bone is named for Atlas of Greek mythology , just as Atlas bore the weight of the heavens, the first cervical vertebra supports the head . [ 1 ]