Long-term follow-up study of 3D printing model-aided treatment of complicated pelvic fractures

Abstract

Objective To discuss the application and long-term effect of the 3D printing model in the treatment of complicated pelvic fractures. Methods Thirty-two patients with Tile C pelvic fractures treated between June 2004 and June 2006 were reviewed retrospectively. Operation was guided by the pelvic-3D printing model in experimental group (nine males and five females; 19-47 years, mean 38 years), while operation was performed based on the traditional CT data in control group (14 males and four females; 16-59 years, mean 36 years). Reconstruction plates and lag screws were used for the fracture internal fixation. Operation time and blood loss were compared between the two groups. Quality of reduction was evaluated using the Matta standard. Pelvic function was evaluated using the Majeed score at postoperative 1 year and 10 years. Results Operation time, intraoperative blood loss and intraoperative transfusion in experimental group were 120(60-186)min, 400(300-650)ml and 315(150-600)ml respectively, which were significant lower than those in control group [185(119-270)min, 740(500-850)ml and 700(400-1 085)ml] (P 0.05). Incidence of complications were comparable between experimental group (14%) and control group (11%) (P<0.05). Conclusions Application of 3D printing models can shorten operation time, reduce surgical trauma, decrease blood loss, and increase reduction rate in the treatment of complicated pelvic fractures. The technique is of great significance in guiding the treatment of complicated pelvic fractures, improving long-term efficacy and reducing long-term complications. Key words: Pelvis; Imaging, three-dimensional; Fracture fixation, internal; Rapid prototyping