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AJR Am J Roentgenol. 1983 Jun;140(6):1083-6.

Malformations of the atlas vertebra simulating the Jefferson fracture.

Abstract

Congenital clefts and aplasias of the atlas vertebra, while rare, are often first encountered in the emergency room setting. Thirty-six patients with atlas malformations and 10 with Jefferson fractures were encountered. Sixteen of the patients with congenital malformations showed bilateral atlantoaxial lateral offset, a finding generally considered to be the result of fracture. The diagnosis of these abnormalities is readily made from plain films by noting their characteristic features. Anomalies produce lateral offset of 1-2 mm. Jefferson fractures produce a greater offset (over 3 mm).

PMID:
6602470
DOI:
10.2214/ajr.140.6.1083
[Indexed for MEDLINE]

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