Accuracy and safety of intraoperative CT-assisted placement of pedicle screw
PAN Dong-sheng
SONG Zhen-quan
ZHAO Ming-guang
ZHANG Hai-song
LU-Yu
JIN Zhen-ye
Abstract：Objective To assess the safety and accuracy of intraoperative CT assisted-placement of pedicle screw in the patients with spinal disorders. Methods The clinical data of 39 patients with spinal disorders, who underwent intraoperative CT-assisted placement of pedicle screws in our hospital from May, 2014 through May, 2015, were analyzed retrospectively. The accuracy of pedicle screw placement was assessed by Gertzbein-Robbins classification after the surgery. The safety of pedicle screw fixation was assessed by the postoperative complications. Results A total of 112 pedicle screws were placed in the spines in 39 patients and the placements of 38 screws of them were adjusted according to intraoperative CT findings. Of 112 screws, 105 were placed in the pedicles, 5 by grade 1 pedicle breach, and 2 by grad 2 pedicle breach according to Gertzbein-Robbins classification of pedicle screw placement accuracy. Two screws breached the medical pedicle walls, 4 breached the lateral walls and 1 breached inferolateral pedicle wall. The postoperative complications included surgical site infections in 4 patients, cerebrospinal fluid leaks in 2 and injury to the nerve in 1. No complication was directly related to the screws placement. No patient required reoperation due to the misplacement of the pedicle screws. Conclusions The accuracy and safety of pedicle screw placement can be enhanced in the patients with spinal disorders by intraoperative CT scanning which may be help the surgeon adjust the improper pedicle screw placement in time.
Keywords：Imaging technologyPedicle screwPlacementSpinal disorders
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 23-26 )