title: Vacuum phenomenon in osteoarthritis of the atlanto-odontoid joint: CT findings.
abstract: Out of 620 consecutive examinations of the atlanto-odontoid joint in patients referred for computed tomography (CT) of the brain or paranasal sinuses, gas collection within the atlanto-odontoid joint was observed in 12 (1.9%). Degenerative abnormalities at the atlanto-odontoid joint were significantly more frequent in patients with a gas-induced vacuum phenomenon than in an age-matched control group. The CT findings and association of the vacuum phenomenon with osteoarthritis of the atlanto-odontoid joint are discussed.
authors.affiliation: Department of Radiology, Leyenburg Hospital, s'Gravenhage, The Netherlands.
authors.forename: J
authors.initials: J
authors.lastname: Zapletal
authors.forename: R E
authors.initials: RE
authors.lastname: Hekster
authors.forename: J T
authors.initials: JT
authors.lastname: Wilmink
authors.forename: J
authors.initials: J
authors.lastname: Hermans
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001268:Atlanto-Axial Joint / Q000000981:diagnostic imaging*; D005260:Female; D005740:Gases; D006801:Humans; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000000981:diagnostic imaging*; D013122:Spinal Diseases / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed
chemical_list: D005740:Gases