Department of Orthopedics, The First Affiliated Hospital of Soochow University, Soochow, China.
Department of Orthopedics, Qingpu Branch of Zhongshan Hospital Fudan University, Shanghai, China.
J Invest Surg. 2022 Feb;35(2):459-466. doi: 10.1080/08941939.2020.1863528. Epub 2020 Dec 30.
To investigate the clinical effect of novel patient-specific 3D printing templates based on external fixation for pelvic screw insertion compared with the fluoro-navigation technique.
We retrospectively studied 18 pelvic fracture patients from July 2017 to July 2018. For analysis, patients were divided into two groups: the template group (15 screws in 8 patients) and the fluoro-navigation group (22 screws in 10 patients). The screw insertion time, radiation exposure time, and accuracy of the screw insertion as evaluated by postoperative CT scans were analyzed.
In the template group, the average screw insertion time (11.5 ± 2.3 min/screw) was significantly 50.6% less than that in the fluoro-navigation group (23.3 ± 3.1 min/screw; < 0.05). The average time of X-ray exposure in the template group (11.5 ± 3.9 s/screw) was also significantly 39.8% less than in the fluoro-navigation group (19.1 ± 2.5 s/screw; < 0.05). In the template group, the mean deviation distance and angle between the actual and planned screw position was 2.6 ± 0.2 mm and 2 ± 0.3°.
The patient-specific template based on external fixation can guide the insertion of the pelvic screw accurately and safely while significantly reducing operation and radiation exposure time.
研究新型个体化 3D 打印模板辅助外固定架引导骨盆螺钉置入的临床效果，并与传统的透视导航技术进行比较。
回顾性分析 2017 年 7 月至 2018 年 7 月收治的 18 例骨盆骨折患者，根据手术方式不同分为模板组（8 例，15 枚螺钉）和透视导航组（10 例，22 枚螺钉）。比较两组患者螺钉置入时间、透视曝光时间及术后 CT 评估螺钉置入的准确性。
模板组螺钉平均置入时间（11.5±2.3min/枚）显著少于透视导航组（23.3±3.1min/枚； <0.05），平均透视曝光时间（11.5±3.9s/枚）也显著少于透视导航组（19.1±2.5s/枚； <0.05）。模板组实际螺钉位置与计划螺钉位置的偏差距离和角度分别为 2.6±0.2mm 和 2°±0.3°。
基于外固定架的个体化模板可安全、准确地引导骨盆螺钉置入，且能显著减少手术操作和透视曝光时间。
