Author:
Liang Bin,Chen Qiang,Liu Shuai,Chen Shuo,Yao Qingqiang,Wei Bo,Xu Yan,Tang Cheng,Wang Liming
Abstract
Abstract
Background
The aim of this study was to investigate the feasibility of an individual navigation template for the deep pin position on the iliac crest, based on digital design and 3D printing technology.
Methods
The preoperative CT images of 8 patients with pelvic fractures were collected. The data were reconstructed using a 3D imaging reconstruction workstation. An individual navigation template for the deep pin position on the iliac crest was designed on a virtual 3D model. The individual drill template and the solid pelvic model were produced using the 3D printing technology. The individual drill template was used for intraoperative deep pin position on the iliac crest after the preoperative simulation was completed.
Results
Thirty-two external fixator pins were inserted using the individual drill template. The average depth of pins was 84.82 mm. The trajectories were appropriate based on the postoperative X-ray and CT scan. No significant difference in the entry point, convergence angle, and caudal angle of the pins were noted before and after the operation (all P > 0.05). Finite element analysis indicated that the deep external fixator pin position could more reasonably distribute the stress in the cortical and spongy bones in the pelvis. All patients could perform partial weight-bearing activity 6 weeks postoperatively. No loosening and rupture of the pin, infection, and no damage of blood vessels and nervous tissue were found during the entire follow-up period.
Conclusions
The individual drill template technique is an improvement of the traditional technique, which could increase precision and the depth of pin position. In addition, good mechanical stability and low risk of pin-related complications occurred due to the individual drill template, which makes the external fixation technique a potential alternative.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Jiangsu Province
Publisher
Springer Science and Business Media LLC
Subject
Orthopedics and Sports Medicine,Rheumatology
Reference25 articles.
1. Saydam M, Şahin M, Yılmaz KB, Tamam S, Demir P, Akıncı M. Correlation of pelvic fractures and associated injuries: an analysis of 471 pelvic trauma patients. Ulus Travma Acil Cerrahi Derg. 2019;25(5):489–96.
2. Brown JV, Yuan S. Traumatic injuries of the pelvis. Emerg Med Clinics. 2020;38(1):125–42.
3. Balbachevsky D, Belloti JC, Doca DG, Jannarelli B, Junior JAY, Fernandes HJA, et al. Treatment of pelvic fractures–a national survey. Injury. 2014;45:S46–51.
4. Waikakul S, Harnrungroj T, Vanadurongwan V. Immediate stabilization by external fixator in unstable fractures of the pelvis: results in 214 patients. Thai J Surg. 1997;18(2):59–65.
5. Wright RD Jr. Indications for open reduction internal fixation of anterior pelvic ring disruptions. J Orthop Trauma. 2018;32:S18–23.
Cited by
5 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献