title: Congenital absence of the posterior arch of the atlas with concomitant fusion to the axis: a case report.
abstract: We present a 52-year-old man with congenital absence of the posterior arch of the atlas and concomitant fusion of the posterior tubercle of the atlas to the spinal process of the axis. He had normal reflexes and no motor deficit. He underwent C3-C7 laminoplasty and achieved good outcome.
authors.affiliation: Department of Orthopaedic Surgery, Singapore General Hospital, Singapore.
authors.forename: Wenxian
authors.initials: W
authors.lastname: Png
authors.affiliation: University Orthopaedics, Hand and Reconstructive Microsurgery Cluster, National University Health System, Singapore.
authors.forename: Hwee Weng Dennis
authors.initials: HW
authors.lastname: Hey
authors.affiliation: Department of Orthopaedic Surgery, Singapore General Hospital, Singapore.
authors.forename: Kapil
authors.initials: K
authors.lastname: Mohan
authors.affiliation: Department of Orthopaedic Surgery, Singapore General Hospital, Singapore.
authors.forename: Wai-Mun
authors.initials: WM
authors.lastname: Yue
mesh_terms: D001368:Axis, Cervical Vertebra / Q000601:surgery*; D001270:Cervical Atlas / Q000002:abnormalities* / Q000601:surgery; D006801:Humans; D065406:Laminoplasty / Q000379:methods*; D008297:Male; D008875:Middle Aged; D013123:Spinal Fusion / Q000379:methods*
keywords: atlanto-axial joint; axis; cervical atlas