3D打印技术在儿童髋关节脱位翻修术中的临床应用

Application of 3D Printing Technology in the Revision Surgery for DDH in Children

目的:探讨3D打印技术在儿童发育性髋关节脱位术后翻修中的临床应用。方法:对8例发育性髋脱位术后再脱位患儿行CT扫描获取病变部位的二维数据,进行三维重建,快速成型制作出与实体1:1大小的骨盆模型,对骨盆模型术前制定手术方案,手术规划和模拟手术,指导手术治疗。结果:术中所见与虚拟三维重建图像及3D打印骨盆模型一致,术前的模拟手术减少了手术操作时间,达到更佳手术效果。结论:3D打印技术能够准确和直观地反映儿童髋关节脱位翻修术前骨盆畸形的立体形态和各部位解剖结构的空间关系,使手术更精确、更可靠、更方便。

Objective：To investigate the application of 3D printing technology in the revision surgery for DDH in children. Methods：Eight patients of redislocation of DDH were examined by lamellar CT to gain two-dimensional data of diseased region. Three dimensional reconstructions of anatomical models were accomplished by computer aided technology. By rapid prototyping, the pelvic models were manufactured, operation project were formulated, preoperative sham operated were enforced and supervise the operation of revision surgery for DDH. Results：Three-dimensional reconstruction images and RP pelvic models were extremely similar to that doctor can see in operation. Preoperative sham operation saved the operation time and the actual angles corresponded almost exactly to the planned corrective angles in 8 cases. Conclusions：3D printing technology can reveal overall, direct-viewing, exactly display three-dimensional shape of complicated deformities, which can make operation excellent safer and more convenient.