Goodridge J, Donalson B. Roentgenographic documentation of atlanto-occipital sidebending. J Am Osteopath Assoc 1992;92(9):1129. doi: 10.7556/jaoa.19126.96.36.1999.
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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.
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