Clinical application of 3D printing combined with minimally invasive ilioinguinal approach in the operation of anterior pelvic ring fracture

Abstract

Objective To evaluate the clinical value of 3D printing combined with minimally invasive ilioinguinal approach in the treatment of anterior pelvic ring fracture. Method s 41 cases of anterior pelvic ring fracture treated in our hospital from June 2016 to June 2018 were retrospectively analyzed. They were divided into control group and observation group according to different surgical methods. Before operation, the normal pelvic anteroposterior, outlet, inlet, iliac oblique, obturator oblique X-ray, and pelvic CT were taken in both groups. According to preoperative CT data, the pelvic fracture model was printed in 1:1 ratio in the observation group, and the operation plan was made from God's perspective on the model to simulate reduction fracture. The control group was treated with conventional open reduction and internal fixation. The operation time, bleeding volume, Matta pelvic reduction score, and Majeed functional score were observed and compared between the two groups. Result s The operation time and bleeding volume of the observation group [(88.10±13.23) min, (105.71±26.04) ml] were less than those of the control group [(144.60±28.26) min, (325.25±58.09) ml], with statistically significant differences between the two groups (P 0.05). Majeed functional score was used to evaluate the curative effect of the two groups at the last follow-up. In the observation group, 15 cases were excellent, 4 cases were good, 2 cases were fair, with the excellent and good rate of 90.5%; in the control group, 12 cases were excellent, 4 cases were good, and 4 cases were fair, with the excellent and good rate of 80.0%; there was no statistically significant difference in curative effect between the two groups (P>0.05). During the follow-up, there was 1 case of internal fixation loosening in the control group, while no internal fixation loosening occurred in the observation group, fracture healing, good hip movement after exercise, no infection or limb numbness and so on. Conclusion 3D printing combined with minimally invasive ilioinguinal approach is a feasible and effective method for anterior pelvic ring fracture. This method has the advantages of small trauma, short operation time, satisfactory reduction, high safety, and quick healing, which is worthy of clinical application. Key words: 3D printing technology; Minimally invasive ilioinguinal approach; Fracture of anterior pelvic ring