Abstract:

Objective To investigate the clinical effect of customized 3D printing?assisted total knee arthroplasty. Methods Ten patients（cutting auxiliary group）from January，2016 to July，2016 were selected. According to the preoperative CT scan data ，total knee arthroplasty was performed under the help of customized 3D printing. The patients who underwent traditional total knee arthroplasty（TAP） were divided into two groups：the amount of blood loss，the operation time，the complication rate（pros? thetic fracture，dislocation，infection and deep venous thrombosis）. The changes of HHS score were com? pared between 2 weeks after operation，1 month after operation and 3 months after operation. The above data were analyzed statistically. Results Compared with the control group，the amount of bleeding，the amount of drainage and the time of operation were less in the former group than in the control group （P<0.05），but the difference was statistically significant（P>0.05）. There was no significant difference in the incidence of HHS in the ipsilateral knee between 2 weeks，1 month and 3 months postoperatively. There was no significant difference between the two groups in the incidence of complications Statistical significance（P>0.05）. Conclusion In the present study，there was no difference in the incidence of knee joint function and complication in patients with total knee arthroplasty after total 3D arthroplasty. However，the operative time was shortened，postoperative drainage decreased.

Key words: 3D printing, clinical curative effect, total knee arthroplasty

摘要：

目的 探讨定制3D打印切模辅助全膝关节置换术的临床疗效。方法 选取我科从2016年1~7月期间10例（切模辅助组）患者，根据患者的术前CT扫描数据，在定制3D打印切模辅助下行全膝关节置换术；再选择10例（对照组）行传统全膝关节置换术的患者，比较两组患者术中出血量和术后引流量及手术时间，并在术后2周比较膝关节活动度变化情况，然后术后1个月比较患侧膝关节HSS评分变化情况，将以上数据并进行统计学分析。结果 切模辅助组和对照组相比较，前者在术中出血量和术后引流量、手术时间方面均少于对照组，差异具有统计学意义（P<0.05）；术后1个月的患侧膝关节HSS评分，两组比较差异无统计学意义（P>0.05）；术后2周患侧膝关节活动度两组比较差异无统计学意义（P>0.05）。结论 定制3D打印切模辅助全膝关节置换术对患者术后膝关节功能恢复、关节活动度的影响与传统的全膝关节置换术并无差异，但是手术时间缩短，术中出血量和术后引流量减少。

关键词: 3D 打印, 临床疗效 , 全膝关节置换