title: Unilateral dysplasia of the superior articular facet of the axis.
abstract: A case of unilateral dysplasia of the superior articular facet of the axis due to incomplete or delayed ossification is described in a child. This may result in asymmetry of the articular surfaces of the axis in adult life and be a cause of torticollis. To our knowledge, no similar case has been reported.
mesh_terms: D001368:Axis, Cervical Vertebra / Q000000981:diagnostic imaging*; D001848:Bone Diseases, Developmental / Q000000981:diagnostic imaging*; D002675:Child, Preschool; D005260:Female; D006801:Humans; D009999:Ossification, Heterotopic / Q000000981:diagnostic imaging; D011859:Radiography