Abstract: Objective　To explore the clinical effects of 3D printing technology in the rapid treatment of intertrochanteric fracture in elderly patients.　Methods　Thirty patients treated with PFNA (Proximal Femoral Nail Antirotation) surgery were involved in our hospital from July 2018 to April 2019. After signing the informed consent, the patients were randomly divided into an experimental group and a control group, with 15 cases in each group.  3D printing technology was used to communicate before operation for the experimental group, while routine pre-operative communication method was used for the control group. After that, the information from the questionnaire of doctor-patient communication before and after operation were collected for the two groups. At the same time, the operation timing (days between admission and operation), operation time and bleeding volume were recorded and analyzed statistically.　Results　The application of 3D printing technology in the communication between doctors and patients before operation had obvious advantages in the understanding and recognition of patients' condition, operation program and nursing plan. Then patients' satisfaction was higher. At the same time, the experimental group also had better performance in operation timing (2.92±1.16) d, while the operation timing of the control group was (4.36±2.10) d (P<0.05).　Conclusions　3D printing technology has a significant effect on doctor-patient communication in the rapid treatment of intertrochanteric fracture of the femur in the elderly, which can shorten the preoperative interval and improve the patient satisfaction.

Key words: Three- dimensional printing, 　Rapid treatment, 　Intertrochanteric fracture, 　Doctor-patient communication