title: Diagnosing atlantoaxial impaction and basilar invagination.
authors.forename: Markku
authors.initials: M
authors.lastname: Kauppi
authors.forename: Kari
authors.initials: K
authors.lastname: Laiho
authors.forename: Marko
authors.initials: M
authors.lastname: Neva
mesh_terms: D001172:Arthritis, Rheumatoid / Q000150:complications / Q000000981:diagnostic imaging*; D001268:Atlanto-Axial Joint / Q000000981:diagnostic imaging*; D006801:Humans; D016916:Joint Deformities, Acquired / Q000000981:diagnostic imaging* / Q000209:etiology; D009777:Occipital Bone / Q000000981:diagnostic imaging; D009809:Odontoid Process / Q000000981:diagnostic imaging; D011859:Radiography; D015203:Reproducibility of Results