Fusion of the anterior arch of the atlas and dens.
Seven cases of fusion of the anterior arch of the atlas to the dens have been described in the English literature. This anomaly alone is stable. A new case of this rare anomaly incidentally discovered in a patient examined for trauma is presented.
D000293:Adolescent; D000328:Adult; D001368:Axis, Cervical Vertebra / Q000002:abnormalities* / Q000000981:diagnostic imaging; D001270:Cervical Atlas / Q000002:abnormalities* / Q000000981:diagnostic imaging; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D011859:Radiography