A Mobile 3D Imaging Navigation System for the Surgical Treatment of Craniocervical Junction Malformation

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  • 頭蓋頚椎移行部奇形の治療における外科用移動型3Dイメージを用いたNavigation Systemの有用性

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Abstract

<p>  We evaluated the usefulness of a mobile 3D Imaging navigation system for the surgical treatment of craniocervical junction malformation and tried to determine the optimum fixation method for this procedure. The results of this study are presented in this paper. The study involved 3 patients with craniocervical junction malformation (excluding cases of atlanto-axial dislocation) who underwent surgery after August 2007. For this operative procedure, an ARCADIS Orbic 3D (Siemens) CT scan capable of intraoperative real-time 3D-CT was linked to the navigation system of a Stealth Station TRIATM Plus (Medtronic SOFAMOR DANEK). A VERTEXTM MAX reconstruction system (Medtronic SOFAMOR DANEK) was used for instrumentation. None of the patients studied developed screw dislocation or neurological complications, and fixation was satisfactorily achieved in all cases. Since malformation of the craniocervical junction is often accompanied by a high riding vertebral artery (VA), hypoplasia of the pedicle or lateral mass and other abnormalities, the deployment of a laminar screw (LS) was found to be useful for the surgical treatment of such cases from a viewpoints of both safety and ease in fixation. Using a mobile 3D imaging navigation system for surgery is advantageous not only for detailed navigation but also checking the location of screw placement immediately by repeated intraoperative CT scans.</p>

Journal

  • Spinal Surgery

    Spinal Surgery 24 (1), 12-17, 2010

    The Japanese Society of Spinal Surgery

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