Feasibility Study Of Standard 3D Printed Guide Plate For Assisting Atlantoaxial Pedicle Screw Placement

Objective: To study the feasibility of benchmarking 3D printed guides for assisting atlantoaxial pedicle screw placement.Methods: 90 patients with atlantoaxial dislocation admitted to the First Affiliated Hospital of Nanchang University from January 2017 to June 2019 were randomly divided into atlantoaxial pedicle screws by equidistant random sampling.The treatment group and the observation group with the implementation of the standard 3D printed guide plate assisted atlantoaxial pedicle screw placement in 45 cases,the total effective rate and symptom scores of the two groups(neck pain,restricted head movement,walking weakness)The nailing effect(the actual inclination of the nail,the head tilt angle,the coordinates of the nail entry point),and the incidence of complications were compared.Results: The total effective rate and complication rate of the two groups were 93.33%,80.00%,4.44%,and15.56%,respectively.The total effective rate of the observation group was higher than that of the control group,and the complication rate was lower than that of the control group.There was no significant difference in the scores between the two groups(P>0.05).The scores of the two groups were lower than those before treatment.The observation group was lower than the control group,the difference was statistically significant(P<0.05).Compared with the introversion angle,head tilt angle and the point of the nail insertion point,there was no statistical difference in the observation group(P>0.05),and the difference in the control group was statistically significant(P<0.05).The difference was statistically significant(P<0.05).Conclusion:In the treatment of atlantoaxial dislocation,the standard 3D printed guide plate assisted atlantoaxial pedicle screw fixation can further improve the accuracy of nail placement,reduce the incidence of complications and improve the symptoms of discomfort.It has important promotion and use value.