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Intraoperative correction of screw position in C2. a Axial and b coronal view of multiplanar reconstruction obtained by isocentric C-arm after drill insertion. A clear displacement of the drill perforating the medial pedicle wall could be identified. c Axial and d coronal view of reconstructed images after correction of drill position. e Axial and f coronal view of postoperative CT scan showing correct screw placement
