关键词: 3D 打印, 个性化, 膝关节置换

Abstract: ［Abstract］ Objective To analyze clinical efficacy of 3D printing navigation templates in total kneearthroplasty（TKA）. Method From March 2016 to October 2016，30 patients with TKA were divided into navigation template group and conventional group. The navigation template group used 3D printing individual navigation templates to assist the operation，and the conventional group used the traditional TKA method. The two groups were matched for age，gender，body mass index （BMI）， hemoglobin concentration，knee society score（KSS）. Then the hemoglobin concentration，operation time， postoperative drainage，KSS score were compared between the two groups before and after operation. Results All patients were followed up for 12?25 months，with an average of 19 months，during which no infection or prosthesis loosening or deep venous thrombosis was found. The navigation template group had a significantly shorter operation time，a less postoperative drainage，a less hemoglobin concentration drops and a higher KSS score than those in the conventional group（P<0.05）. Conclusion The application of 3D printing navigation template in TKA can achieve better clinical efficacy by saving operation time， reducing bleeding and improving joint function.

Key words: individuation, total knee arthroplasty, 3D printing