11/1/2023 0 Comments Odontoid fracture type 2Inclusion criteria consists of males and females of 70 years of. Materials and methods: This is a retrospective chart review of patients with Type II odontoid fractures between July 1998 and June 2006. Type IIA: Nondisplaced/minimally displaced with no comminution Type IIB: Displaced fracture with fracture line from anterosuperior to posteroinferior Type IIC: Fracture from anteroinferior to posterosuperior, or. We therefore designed a study to analyze geriatric patients with Type II odontoid fractures treated with either rigid cervical collar or surgery. The patient progression was poor, and he died six. Interpretation of where the fracture line occurs in the dens.The Anderson and D'Alonzo classification is the most commonly used classification of fractures of the odontoid process of C2.Īnother classification system is the Roy-Camille classification, which aids more in the management of odontoid fractures. Type I: Fracture is at the tip Type II: Base of dens Type III: Body of C2 Grauer Classification of Type II Odontoid fractures. All of it accompanied by a spinal cord hemorrhagic contusion (pink arrows) from the C2 up to the C3 (Fig. If there are contraindications to a CT scan or IV contrast, then an MRI can be done to provide more definitive 2 The incidence of odontoid fractures is approximately 21.4 per 100 000 inpatient Medicare admissions, and it is. 1, 2 The growing elderly population in the United States has seen the incidence of odontoid fractures more than double over the past decade. 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. Odontoid fractures are the most common fracture of the axis and are the most common type of cervical spine fracture in patients over 65.Surgical methods are classified into 2 main groups according to the approach. Important prognostic factors for fracture healing (union versus non-union) are the degree of fracture. The axis' defining feature is its strong odontoid process (bony protrusion) known as the dens, which rises dorsally from the. It can be caused by either hyper-flexion or hyperextension mechanisms of injury. edit on Wikidata In anatomy, the axis (from Latin axis, 'axle') or epistropheus is the second cervical vertebra (C2) of the spine, immediately inferior to the atlas, upon which the head rests. Type III fracture lines extend into the body of the axis. This case demonstrates a type 2 odontoid process fracture, a transverse fracture through the base of the dens and represents the most common type of dens fracture. Type II fractures occur at the base of the odontoid process. Type I fractures involve avulsion near the tip of the dens. Usually line up with respect to the margins of C2 (axis). The Anderson and D’Alonzo classification of odontoid fractures. Spaces between the dens (located on C2 and projecting up) and the lateral Neck Disability Index and Short-Form 36 (SF-36) version 2 were collected at. Methods: Subgroup analysis of a prospective multicenter study of elderly patients (65 yr) with type II odontoid fracture. through the odontoid and into the lateral masses of C2 relatively stable if not excessively displaced best prognosis for healing. Summary of background data: Odontoid fractures are among the most common fractures in the elderly, and controversy exists regarding treatment. 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. Hadley 2 described this type of fracture which has a significantly increased risk of nonunion when treated non-operatively compared with classical type II fractures represents 5-10 of type II fractures type III. Presence of other traumatic injuries or neurologic deficits.Type II odontoid fractures are the commonest type representing about 6574 of the odontoid fractures. Type 1, Oblique fracture through the odontoid tip, Stable Type 2, Fracture through the base of the dens, Unstable. Type III is a fracture extending into the body of the axis 2,3,4. When assessing for the presence of a dens fracture, the choice of initial imaging is influenced by the: Type IIA fractures (comminuted), an odontoid Type II fracture with bone fragments at the base of the odontoid, have a 100 failure rate when treated with a halo. Sometimes, type II fracture is associated with a comminuted fragment at the base of the dens called the type II A variety of fracture this fracture is markedly unstable. The most frequent modern causes for this injury include 1) motor vehicle accidents, 2) falls from heights, and 3) severe blows to the back.
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