title: Roentgenographic documentation of atlanto-occipital sidebending.
abstract: It is assumed that the atlas (C1) glides superiorly and laterally along the occipital (C0) condyle during translatory motion of the head in the opposite direction. To provide roentgenographic documentation, a translatory test of atlanto-occipital (C0-C1) motion was performed to the left and to the right on a healthy, asymptomatic volunteer subject. Roentgenographic examination was made at the extreme in each direction. The films indicate the change in atlantal position relative to the occiput and support the assumption. A translation of the head in the coronal plane to test for atlanto-occipital joint mobility is described.
authors.affiliation: Department of Family Medicine, Michigan State University, College of Osteopathic Medicine, East Lansing 48824-1316.
authors.forename: J P
authors.initials: JP
authors.lastname: Goodridge
authors.forename: B C
authors.initials: BC
authors.lastname: Donalson
mesh_terms: D001269:Atlanto-Occipital Joint / Q000000981:diagnostic imaging* / Q000502:physiology; D006801:Humans; D009068:Movement; D011859:Radiography; D016059:Range of Motion, Articular