关键词: 距骨骨折, 3D打印, Sneppen Ⅱ

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