Abstract: Objective To analyze the effect of 3D printing in the treatment of Sneppen Ⅱ talus fracture. Methods From March 2016 to August 2018, 28 patients with Sneppen Ⅱ talus fracture were randomly divided into 4 groups： junior traditional group （Group A）, junior 3D group （Group B）, senior traditional group （Group C） and senior 3D group （Group D）. Each group had 7 patients, 28 patients. In group B and D, 3D printing technology was used to print 3D model of talus before operation. Before operation, simulated operation was performed and appropriate operation approach was made. The time of preoperative conversation, the recognition and satisfaction of patients and their families, the times of intraoperative fluoroscopy, the amount of intraoperative bleeding, the time of operation, the excellent rate of postoperative Maryland score and the incidence of postoperative complications were analyzed. Results Compared with group A, group B and group D, the time of preoperative conversation, the recognition and satisfaction of patients and their families, and the excellent and good rate of AOFAS scores were all lower than those of group A and group C, the difference was statistically significant （P<0.05）; the time of operation, the times of intraoperative fluoroscopy, the amount of intraoperative bleeding and postoperative complications were significantly reduced in group B and group D, the difference was statistically significant （P<0.05）, and group C and group D had no difference There was no significant difference （P>0.05）. Conclusion 3D printing technology is helpful to the junior doctors in the treatment of Sneppen Ⅱ type talus fracture. It can shorten the growth years of the junior doctors and help the senior doctors.

Key words: talus fracture, Sneppen Ⅱ, 3D printing

摘要： 目的 分析不同年资医师应用3D打印技术辅助治疗SneppenⅡ型距骨体骨折的效果。方法 对2016年3月至2018年8月滨州医学院附属医院足踝外科收治的28例Sneppen Ⅱ型距骨体骨折患者进行随机分组,共分为4个组别：低年资医师传统组（A组）、低年资医师3D组（B组）、高年资医师传统组（C组）、高年资医师3D组（D组）,每组各7例患者,共28例患者。B组和D组术前采用3D打印技术打印距骨3D模型,术前进行模拟手术以及制定合适的手术入路。对比分析每组的术前谈话时间、患者及其家属的认知度及满意度、术中透视次数、术中出血量、手术时间、术后Maryland评分优良率以及术后并发症的发生率。结果 B组及D组术前谈话时间、患者及其家属的认知度及满意度、术后AOFAS评分优良率均小于A组以及C组,差异有统计学意义（P<0.05）;手术时间、术中透视次数、术中出血量以及术后并发症：B组与A组相比明显减少,差异有统计学意义（P<0.05）,C组与D组相比无明显差距,差异无统计学意义（P>0.05）。结论 3D打印技术在治疗Sneppen Ⅱ型距骨体骨折中对低年资医师帮助较大,能明显缩短低年资医师成长年限,对高年资医师也有帮助。

关键词: 距骨骨折, 3D打印, Sneppen Ⅱ