3D打印导航模块辅助腰椎椎弓根螺钉精确植入的实验研究
收稿日期: 2014-03-31
网络出版日期: 2014-06-04
基金资助
国家高新科技计划863计划(2012AA02A603); 福建省卫生厅医学创新课题（2012-CX-34）
Experimental study on accurate placement of the lumbar pedicle screws assisted by 3D printing navigation module
Received date: 2014-03-31
Online published: 2014-06-04
目的 利用数字化设计和3D打印技术研制个体化导航模块，实现个体化的微创下腰椎椎弓根螺钉精确植入。 方法 建立37例正常人体腰椎（L1~5）三维模型，设计导航杆使其恰好穿过椎弓根中心。基于导航杆，通过布尔运算获得导航模块。3D打印出导航模块和腰椎标本实体，在导航模块的辅助下植入椎弓根螺钉，观察螺钉的进钉点、进钉方向和螺钉在椎弓根内的位置。 结果 总共应用导航模块辅助植入椎弓根螺钉228枚，全部螺钉的进钉点，进钉方向都与虚拟方案相一致，螺钉在椎弓根内位置良好，无一例螺钉穿破椎弓根皮质。 结论 基于数字化设计的3D打印导航模块，可以实现个体化的微创下腰椎椎弓根螺钉精确植入。
严斌 , 张国栋 , 吴章林 , 许靖 , 杨洋 , 黄文华 . 3D打印导航模块辅助腰椎椎弓根螺钉精确植入的实验研究[J]. 中国临床解剖学杂志, 2014 , 32(3) : 252 -255 . DOI: 10.13418/j.issn.1001-165x.2014
Objective To study individualized navigation module that can realize the accurate placement of the minimally invasive lumbar pedicle screws based on digital design and 3D printing technology. Methods 37 cases of the normal human lumbar (L1~L5) 3D model were reconstructed in our study. Navigation bars were designed through the pedicle center. Based on the navigation bars, navigation modules were produced by Boolean Operation. The entities of navigation modules and lumbar spine specimens were built by using 3D printing technology. Then, pedicle screws assisted by navigation modules were implanted. Finally, the anchor point,orientation and position of the screws were observed. Results Navigation modules were used in 228 cases of pedicle screws implantation. The anchor point and orientation of the screws were all consistent with virtual schemes. The position of pedicle screws were good and none of the screws worn out the pedicle cortex. Conclusion By means of digital design and 3D printing navigation module, accurate placement of individualized minimally invasive lumbar pedicle screws can be realized.
Key words： Digital design; 3D printing; Navigation module; Lumbar spine; Pedicle screws
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