椎弓根螺钉自动规划系统在机器人辅助腰椎椎弓根螺钉内固定术中的应用OA

Objective:To investigate the application of an automated pedicle screw planning system in robot-assisted lumbar spine surgery.Methods:Clinical data of 45 patients who underwent robot-assisted posterior lumbar pedicle screw fixation using an automated planning system based on intraoperative O-arm cone-beam computed tomography(CBCT)images at the Department of Orthopedics,the First Hospital of China Medical University from June 2024 to February 2025 were retrospectively analyzed.Screw planning accuracy was assessed using the Gertbein-Robbins grading system.Screw trajectories from manual annotation and automated planning were compared.Planning time and screw adjustment rates were recorded.Results:A total of 232 screws were successfully planned.Among normal vertebrae,216 screws were acceptable,achieving a planning accuracy of 99.08%.Among fractured vertebrae,10 screws were acceptable,with a planning accuracy of 71.43%.No statistically significant difference was found between manual annotation and automated planning of screw trajectories(P>0.05).The average screw planning time was(8.29±0.53)s.137 screws were adjusted in normal vertebrae(adjustment rate:62.84%),and 12 screws were adjusted in fractured vertebrae(adjustment rate:85.71%).Among these adjustments,143 screws were modified in the transverse plane(adjustment rate:61.64%),while 6 screws were adjusted in the sagittal plane(adjustment rate:2.59%).Conclusion:The automated pedicle screw planning system used in this study can achieve high accuracy in lumbar pedicle screw placement while significantly reducing planning time,which is worthy of clinical promotion.