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Type of odontoid fracture12/8/2023 They typically occur in young patients involved in a high. This classification scheme aids the management of odontoid fractures. Odontoid fractures result from both hyperflexion and hyperextension injuries to the cervical spine. The level of fracture line as described by the Anderson and D’Alonzo classification is not predictive of the degree of instability or the risk of non-union. Interpretation of where the fracture line occurs in the dens. The Roy-Camille classification of fractures of the odontoid process of C2 depends on the direction of the fracture line 1. Acutely, the fracture lacks corticated margins, which is a helpful distinguishing. This is an avulsion injury to the tip of the odontoid and usually is stable however it is occasionally associated with gross instability due to traction forces applied to, and subsequent injury of, the apical and/or alar ligaments. A true Type I fracture consists of a tiny bony fragment of the odontoid tip at the attachment site of the alar ligament Figure 8. A type I fracture (less than 5 of cases) is an oblique fracture through the upper part of the odontoid process. If there are contraindications to a CT scan or IV contrast, then an MRI can be done to provide more definitive Often, an alar ligament avulsion fracture (Type I) is confused with a smaller Type II fracture fragment, which is far more common. Odontoid fracture of the axis, a common cervical spine injury, is challenging because of the potential for additional injury during treatment due to the complex architecture of the cranio-cervical junction. CT & MRI Scans: If there are neurologic deficits present or the mechanism of injury isĬoncerning, then a CT scan of the head and neck along with a CT angiogram of the neck to evaluate for vertebral artery injuries or spasm.Usually line up with respect to the margins of C2 (axis). The treatment of these injuries remains controversial, with options that include both. Spaces between the dens (located on C2 and projecting up) and the lateral Odontoid fractures are the most prevalent C2 fracture subtype. The reported incidence of nonunion of type-II fractures after conservative treatment has varied from 15 to. External immobilization is the treatment of choice for Type I and III there is still no wide consensus about the best management of Type II fractures. In general radiographs (such as the odontoid view) would be reserved for younger patients, who are not unstable, do not need more advanced imaging (such as a CT or MRI) in the same anatomical areas for evaluation of other injuries. Odontoid fractures constitute the most common cervical fractures in elderly. Presence of other traumatic injuries or neurologic deficits.demographics shift toward advanced age, the disease burden of odontoid fractures can be expected to increase. When assessing for the presence of a dens fracture, the choice of initial imaging is influenced by the: Odontoid fractures are the most common fractures of the cervical spine in the elderly.
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