Abstract: Objective To explore the application value of 3D print technology-assisted plate internal fixation in the treatment of Schatzker type Ⅰ-Ⅵ tibial plateau fractures.Methods Patients with Schatzker type Ⅰ-Ⅵ tibial plateau fractures admitted to department of emergency trauma surgery of Jining First People' s Hospital were retrospectively analyzed from January 2020 to October 2022,and they were classified into the observation group and the control group by different treatment methods.The patients who received 3D print technology-assisted plate internal fixation were assigned as the observation group,and the patients who underwent traditional plate internal fixation were enrolled as the control group.The confounding factors of baseline data such as gender and age were excluded by propensity matching score (caliper=0.02),and 43 cases were finally obtained in each group.The surgical time,intraoperative blood loss,intraoperative fluoroscopy frequency,excellent and good rate of fracture reduction,bone healing time of fracture and knee function score were compared.Results The surgical time,fluoroscopy frequency and blood loss in the observation group were shorter or lower than those in the control group (P<0.05).The fracture healing time in the observation group was (12.56±1.49) weeks,which was shorter than (16.53±1.83) weeks in the control group (P<0.05).At 6 months after surgery,the Rasmussen radiology score in the observation group with (16.86±1.04) points，which was higher than (15.07±1.55) points in the control group,and the reduction effect grading was better than that in the control group (P<0.05).The knee Rasmussen clinical score in the observation group was (26.63±1.56) points,which was higher than (25.67±2.21) points in the control group (P<0.05).Conclusion 3D print technology-assisted plate internal fixation has significant value in treating Schatzker type Ⅰ-Ⅵ tibial plateau fractures,and can shorten the surgical time,reduce the surgical trauma,lower the intraoperative fluoroscopy frequency,enhance the fracture reduction effect and significantly restore the knee function.

Key words: 3D print technology；Schatzker Ⅰ-Ⅵ；tibial plateau fractures；plate internal fixation