Clinical Effect and Complication Analysis of 3D Printing Technology Combined with Proximal Femoral Nail antirotation in the Treatment of Lateral Wall Ruptured Intertrochanteric Fractures of the Femur

CHENG Aimin; SHAN Qingjie; LIU Wenlong; LI Shuai; YIN Jun; HAO Guangliang; WEN Jianmin

doi:10.3969/j.issn.1002-3429.2025.12.012

Abstract：Objective To explore the clinical effect of 3D printing technology combined with proximal femoral nail antirotation(PFNA)in the treatment of lateral wall ruptured intertrochanteric fractures of the femur.Methods A retro-spective analysis was conducted on the clinical data of 118 patients with lateral wall ruptured intertrochanteric fractures of the femur admitted from January 2020 to October 2024.They were divided into the conventional group(n=57)and the 3D group(n=61)according to different treatment plans.The conventional group was treated with PFNA,and the 3D group was treated with 3D printing technology combined with PFNA.The perioperative indicators(duration of operation,intraoperative blood loss,fracture healing time,time to off-bed activity,length of hospital stay,and the number of intraoperative X-ray fluorosco-py),hip function[Harris Hip Function Score(HHS)],tip-apex distance(TAD),neck-shaft angle(NSA)and complications were compared between the two groups.Results The duration of operation,fracture healing time,time to off-bed activity and length of hospital stay in the 3D group were shorter than those in the conventional group,while intraoperative blood loss and the number of intraoperative X-ray fluoroscopy in the 3D group were less than those in the conventional group(P<0.01).The intraoperative reduction satisfaction rate in the 3D group was higher than that in the conventional group[95.08%(58/61)vs.82.46%(47/57)],showing significant difference(P<0.01).At 3 months after operation,the HHS scores of each item(function,pain,range of motion and limb deformity)in the 3D group were all higher than those in the conventional group(P<0.01).At 3 months after operation,TAD in the 3D group was lower than that in the conventional group,while the NSA was greater than that in the conventional group(P<0.01).The total incidence of complications in the 3D group[16.39%(10/61)]was lower than that in the conventional group[31.58%(18/57)],and the difference was statistically significant(P<0.05).Conclusion The application of 3D printing technology combined with PFNA in patients with lateral wall ruptured intertrochanteric fractures of the femur has a better effect.It helps to shorten the fracture healing time,improve the satisfaction of intraoperative reduction,restore hip joint function,maintain an appropriate TAD and NSA,and reduce the incidence of complications.