11/30/2022 0 Comments Atlas boneWith a Type I fracture, the tip of the dens is broken. What is the function of the dens? Where is a dens fracture?Ī fracture of the odontoid bone (also called the dens), is an upward extension of C2 cervical vertebrae (i.e., axis) up into the C1 cervical vertebrae (i.e., atlas) and is held in place partially by the alar, apical and transverse ligaments. There are three types of dens fractures with type II being the most common. What are fractured dens?Ī fracture of the odontoid bone (also called the dens), is an upward extension of C2 cervical vertebrae (i.e., axis) up into the C1 cervical vertebrae (i.e., atlas) and is held in place partially by the alar, apical and transverse ligaments. The dens (odontoid process) of the axis exists as a superior projection from the C2 vertebral body and is conical in shape and serves as an attachment site for the transverse, apical, and alar ligaments. It exhibits a slight constriction or neck, where it joins the main body of the vertebra. The odontoid process (also dens or odontoid peg) is a protuberance (process or projection) of the Axis (second cervical vertebra). Inferiorly the atlas articulates with the dens which acts as a pivot that allows the atlas and attached head to rotate on the axis.ĭescription. Superiorly the atlas articulates with the occiput to form the Atlanto-occipital joint which allows the head to nod up and down on the vertebral column. How does the dens articulate with the atlas?Īrticulations. The first cervical vertebrae (atlas) rotates around the odontoid process to provide the largest single component of lateral rotation of the cervical spine. The odontoid process, or dens, is a superior projecting bony element from the second cervical vertebrae (C2, or the axis).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |