title: Occipitoaxial spinal interarticular stabilization with vertebral artery preservation for atlantal lateral mass failure.
abstract: The treatment of craniocervical instability caused by diverse conditions remains challenging. Different techniques have been described to stabilize the craniocervical junction. The authors present 2 cases in which tumoral destruction of the C-1 lateral mass caused craniocervical instability. A one-stage occipitoaxial spinal interarticular stabilization (OASIS) technique with titanium cages and posterior occipitocervical instrumentation was used to reconstruct the C-1 lateral mass and stabilize the craniocervical junction. The ipsilateral vertebral artery was preserved. The OASIS technique offers single-stage tumor resection, C-1 lateral mass reconstruction, and stabilization with a loadsharing construct. It could be an option in the treatment of select cases of C-1 lateral mass failure.
authors.affiliation: Neurosurgical Service, Department of Clinical Neurosciences, CHUV, Lausanne, Switzerland.
authors.forename: Lukas
authors.initials: L
authors.lastname: Bobinski
authors.forename: Marc
authors.initials: M
authors.lastname: Levivier
authors.forename: John M
authors.initials: JM
authors.lastname: Duff
mesh_terms: D001268:Atlanto-Axial Joint / Q000601:surgery*; D002574:Cervical Vertebrae / Q000473:pathology / Q000601:surgery*; D005260:Female; D006801:Humans; D007593:Joint Instability / Q000175:diagnosis / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D013123:Spinal Fusion / Q000379:methods; D025321:Surgery, Computer-Assisted; D016896:Treatment Outcome; D014711:Vertebral Artery / Q000601:surgery*
keywords: C-1 lateral mass reconstruction; CVJ = craniovertebral junction; OASIS = occipitoaxial spinal interarticular stabilization; SINS = Spine Instability Neoplastic Score; VA = vertebral artery; craniocervical instability; technique; titanium cages; vertebral artery preservation