Odontoid fractures comprise 915 of all cervical spine fractures.1,2 The incidence of. Type II occurs at the base of the odontoid process and represents the most common fracture type. The classification into SFs and UFs was significant for its angulation (P 0.0006) and displacement (P < 0.0001). 9 Type I is an avulsion of the odontoid tip by the alar ligaments and is very rare. 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. The fractures were classified as type IIA in 3 patients, type. Odontoid fractures have been divided into 3 major types according to the classification of Anderson and D’Alonzo.
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