Atlantoaxial stabilization using multiaxial C-1 posterior arch screws: technical note

Michael B. Donnellan, Ioannis G. Sergides, William R. Sears

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    13 Citations (Scopus)


    The authors present a novel technique of atlantoaxial fixation using multiaxial C-1 posterior arch screws. The technique involves the insertion of bilateral multiaxial C-1 posterior arch screws, which are connected by crosslinked rods to bilateral multiaxial C-2 pars screws. The clinical results are presented in 3 patients in whom anomalies of the vertebral arteries, C-1 lateral masses, and/or posterior arch of C-1 presented difficulty using existing fixation techniques with transarticular screws, C-1 lateral mass screws, or posterior wiring. The C-1 posterior arch screws achieved solid fixation and their insertion appeared to be technically less demanding than that of transarticular or C-1 lateral mass screws. This technique may reduce the risk of complications compared with existing techniques, especially in patients with anatomical variants of the vertebral artery, C-1 lateral masses, or C-1 posterior arch. This technique may prove to be an attractive fixation option in patients with normal anatomy.
    Original languageEnglish
    Pages (from-to)522-527
    Number of pages6
    JournalJournal of Neurosurgery
    Issue number6
    Publication statusPublished - 2008


    • atlantoaxial
    • stabilization
    • pars screw
    • posterior arch screw
    • transarticular screw
    • vertebral artery


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