• 1. Chinese PLA General Hospital Medical School, Beijing, 100853, P. R. China;
  • 2. Department of Orthopaedic Trauma, the Fourth Medical Center, Chinese PLA General Hospital, Beijing, 100048, P. R. China;
  • 3. Department of Orthopaedics, Aerospace Center Hospital, Beijing, 100049, P. R. China;
  • 4. Chinese PLA Strategic Support Force Medical Center, Beijing, 100101, P. R. China;
  • 5. AI Sports Engineering Lab, School of Sports Engineering, Beijing Sport University, Beijing, 100084, P. R. China;
  • 6. National Clinical Research Center for Orthopaedics & Sports Rehabilitation in China, Beijing, 100048, P. R. China;
CHEN Hua, Email: chenhua0270@126.com; TANG Peifu, Email: pftang301@126.com
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Objective  To investigate the early effectiveness of transiliac-transsacral screws internal fixation assisted by augmented reality navigation system HoloSight (hereinafter referred to as “computer navigation system”) in the treatment of posterior pelvic ring injuries. Methods A retrospective analysis was made in the 41 patients with posterior pelvic ring injuries who had been treated surgically with transiliac-transsacral screws between June 2022 and June 2023. The patients were divided into navigation group (18 cases, using computer navigation system to assist screw implantation) and freehand group (23 cases, using C-arm X-ray fluoroscopy to guide screw implantation) according to the different methods of transiliac-transsacral screws placement. There was no significant difference in gender, age, body mass index, causes of injuries, Tile classification of pelvic fracture, days from injury to operation, usage of unlocking closed reduction technique between the two groups (P>0.05). The time of screw implantation, the fluoroscopy times, the guide wire adjustment times of each screw, and the incidence of complications were recorded and compared between the two groups. The position of the transiliac-transsacral screw was scanned by CT within 2 days after operation, and the position of the screw was classified according to Gras standard. Results The operation was successfully completed in both groups. The time of screw implantation, the fluoroscopy times, and the guide wire adjustment times of each screw in the navigation group were significantly less than those in the freehand group (P<0.05). There were 2 cases of incision infection in the freehand group, and the incision healed by first intention after active dressing change; there was no screw-related complication in the navigation group during operation and early period after operation; the difference in incidence of complications between the two groups (8.7% vs. 0) was not significant (P=0.495). According to the Gras standard, the screw position of the navigation group was significantly better than that of the freehand group (P<0.05). Conclusion Compared with the traditional freehand method, the computer navigation system assisted transiliac-transsacral screws internal fixation in the treatment of posterior pelvic ring injuries has advantages of improving the accuracy of screw implantation and reducing radiation damage and the time of screw implantation.

Citation: CAO Wenhao, ZHU Zhengguo, QI Hongzhe, TANG Junjun, ZHANG Wei, LI Jiaqi, LI Shuangcheng, WANG Zhonghe, LI Changda, ZHOU Feng, LIU Haoyang, CHEN Hua, TANG Peifu. Early effectiveness of computer navigation system-assisted transiliac-transsacral screws placement for posterior pelvic ring injuries. Chinese Journal of Reparative and Reconstructive Surgery, 2023, 37(9): 1049-1054. doi: 10.7507/1002-1892.202306092 Copy