Objective: Within the human spine the atlantoaxial joint is the most mobile one, especially important for left-right axial rotation around the axis given by the odontoid process. Within the surgical armamentarium, the procedure according to F. Magerl was the standard procedure to fix the joint following[for full text, please go to the a.m. URL] ; SeriesInformation ; 63. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Japanischen Gesellschaft für Neurochirurgie (JNS)