Comparison of Minimally Invasive Internal Screw-Rod System and Cannulated Screw Fixation for Anterior Pelvic Ring Fractures

Shi Pengju; Zong Shuangle; Wang Jiansheng; Hu Qifeng; Su Lixin; Zhao Yanhui

doi:10.3969/j.issn.1008-5572.2025.11.005

Abstract：Objective To investigate the clinical efficacy of minimally invasive internal screw-rod system versus cannulated screw fixation in treating anterior pelvic ring fractures.Methods A retrospective analysis was performed on data of 37 patients with anterior pelvic ring fractures admitted to the Tangshan Second Hospital from November 2016 to March 2021.According to different internal fixation methods for the anterior pelvic ring,patients were divided into two groups.The internal screw-rod group comprised 17 cases[ll males,6 females;age 25～65 years,mean(51.2±11.3)years].The cannulated screw group comprised 20 cases[13 males,7 females;age 22～69 years,mean(49.2±11.1)years].Operative time,intra-operative blood loss,peri-operative complications and fracture healing time were compared between the two groups.At the final follow-up,fracture reduction quality was assessed using Matta scoring criteria and functional recovery was evaluated using the modified Merle d'Aubigné-Postel hip function score.Results Post-operative follow-up lasted 10～20 months,mean(13.5±4.2)months.All 37 fractures healed uneventfully.No significant differences were found between the two groups in operative time,complication rate or fracture healing time(P＞0.05).Intra-operative blood loss in the internal screw-rod group was greater than that in the cannulated screw group(P＜0.05).At the final follow-up,the excellent-good rates of fracture reduction and functional recovery did not differ significantly between the two groups(P＞0.05).Conclusion The minimally invasive internal screw-rod system and cannulated screw technique provide equivalent clinical efficacy for anterior pelvic ring fractures.The optimal fixation method can be selected according to specific clinical circumstances.