Clinical efficacy and safety of modified tracer fixation technique in robot-assisted percutaneous pedicle screw fixation for thoracolumbar fractures

作者：Gen Li, Junwei Zhang, Zhongfeng Zhou, Kai Huang, Chunjiu Gao, Li Zheng, Hua Li, Yunqing Wang, Jinhong Li, Feng Yuan, Xuebin Tang · 发表于：Journal of Orthopaedic Surgery and Research · 年份：2025 · DOI：10.1186/s13018-025-06453-0 · 被引用次数：1 · 研究领域：Spinal Fractures and Fixation Techniques、Management of metastatic bone disease、Scoliosis diagnosis and treatment

OBJECTIVE: This study aims to compare the clinical efficacy and safety of the modified skin-fixed tracer with spinous process-fixed tracer in robot-assisted percutaneous pedicle screw (PPS) fixation for thoracolumbar fractures. METHODS: A total of 98 patients with thoracolumbar fractures undergoing robot-assisted PPS fixation were retrospectively recruited from April 2023 to June 2024 in the Second Affiliated Hospital of Xuzhou Medical University, including 46 in skin-fixed tracer group and 52 in spinous process-fixed tracer group. In skin-fixed group, there were 20 males and 26 females, with an average age of 44.0 ± 8.7 years (range 19-59 years); In spinous process-fixed group, there were 30 males and 22 females, with an average age of 42.7 ± 8.9 years (range 19-58 years). Clinical outcomes were assessed by preoperative and postoperative (day 7, 3-month and 6-month) Visual Analogue Scale (VAS), anterior vertebral height ratio (AVHR), Cobb angle, and Oswestry Disability Index (ODI). Surgical indicators included tracer fixation time, total duration of surgery, intraoperative blood loss, number of intraoperative fluoroscopy, and length of incision. Besides, Gertzbein-Robbins classification was used to evaluate the accuracy of PPS fixation. RESULTS: All surgeries were successfully completed under intraoperative neurophysiologic monitoring (IONM) without complications of spinal cord injuries. Patients were followed up for 6 to 14 months, with an average follow-up time of 10.2 ± 2...