Atlanto-axoid instability.
D000293:Adolescent; D000328:Adult; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000150:complications; D001368:Axis, Cervical Vertebra; D001270:Cervical Atlas; D002648:Child; D002675:Child, Preschool; D005599:Fractures, Ununited / Q000150:complications; D006801:Humans; D007223:Infant; D007239:Infections / Q000150:complications; D007592:Joint Diseases / Q000151:congenital / Q000175:diagnosis / Q000209:etiology / Q000601:surgery; D008875:Middle Aged