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

摘要： ［摘要］ 目的 探讨基于3D 打印的个性化截骨导板在全膝关节置换术中的应用价值。方法选择 2016 年 3 月～2016 年 10 月共 30 例行全膝关节表面置换术患者，分为 3D 导板组（利用 3D 打印的个性化截骨导板辅助截骨，15 例）和对照组（采用传统截骨方法，15 例），术前两组患者年龄、性别、BMI 指数、血红蛋白、KSS 临床评分、KSS 功能评分均无统计学差异（P>0.05）。比较两组术前及术后次日血红蛋白下降幅度、手术时间、术后引流量、术后 3 个月 KSS 临床评分及功能评分差异。结果 所有病例术后获12～25 个月随访，平均19 个月，均未出现关节感染、假体松动、深静脉血栓等并发症。3D 导板组的手术时间、术后引流量、术后血红蛋白下降幅度均低于传统对照组（P<0.05），而术后3 个月KSS 临床评分及功能评分均高于传统对照组（P<0.05）。结论 使用基于 3D 打印的个性化截骨导板辅助全膝关节表面置换术，可节省手术时间、减少出血，改善关节功能，获得更好的临床疗效。

关键词: 3D 打印, 个性化, 膝关节置换