Anatomical structure of the atlas - Kenhub
2023年10月30日 · Located between the anterior and posterior arch of the atlas are two ovoid lateral masses. The lateral masses function in place of a vertebral body. They are the thickest and strongest portion of the atlas and support the weight of the cranium.
Atlas (anatomy) - Wikipedia
The lateral masses are the most bulky and solid parts of the atlas, in order to support the weight of the head. Each carries two articular facets, a superior and an inferior.
C1 fractures: a review of diagnoses, management options, and …
2016年6月29日 · The atlas has two lateral masses with concavities that match the condyles of the occiput, forming the occipito-cervical articulations and allowing for movement of the skull. The C1-2 joint is highly mobile, with the dens of the axis secured to the anterior arch of the atlas by the transverse odontoid ligament.
Axis (C2) | Radiology Reference Article - Radiopaedia.org
2023年9月3日 · The axis is formed by a body with the attached dens, two lateral masses, a posterior neural arch (formed by the pedicle and a thick lamina), and a large spinous process, which is commonly bifid. Anterior components of the axis are composed of:
Lateral Mass (Right) | Complete Anatomy - Elsevier
The lateral masses are the two expanded, oval, laterally located parts of the atlas (first cervical vertebra). They are both continuous: —anteromedially, with the anterior arch of atlas; —posteromedially, with the posterior arch of atlas; —laterally, with a transverse process. On its corresponding side, each lateral mass of atlas ...
Cervical Lateral Mass Fracture Separation - Spine - Orthobullets
2021年6月23日 · Cervical Lateral Mass Fracture Separations of the lateral mass-facet are uncommon cervical spine injuries characterized by a high degree of instability and neurological deficits. Diagnosis is made with CT scan of the cervical spine.
Lateral Mass Fixation in Subaxial Cervical Spine: Anatomic Review
2011年10月18日 · The lateral mass is the bony junction between the superior and inferior articular processes, separated medially from the lamina by the medial facet line (a sulcus at the junction of the lamina and facet). The pedicle connects the lateral mass with the vertebral body and lies between the vertebral canal and the transverse foramen. 2.
Atlas Fractures & Transverse Ligament Injuries - Orthobullets
2021年6月19日 · An open-mouth odontoid radiograph is useful to evaluate for disruption of the transverse ligament which leads to lateral displacement of the lateral masses relative to each other. Stable injuries can be treated with immobilization in a cervical collar.
Lateral Mass Screw Fixation in the Cervical Spine: Introducing a …
2020年11月16日 · Lateral mass screw fixation is a common surgery that is performed in the cervical spine. Various modifications for the procedure have been described, such as changes in the entry point, angulation of the screws, and modifications in the exit point. These do not allow the insertion of longer screws that can give more purchase on the bone. Methods.
Lateral mass of atlas - e-Anatomy - IMAIOS
Definition. The lateral masses are the most bulky and solid parts of the atlas, in order to support the weight of the head. Each carries two articular facets, a superior and an inferior.