中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (7): 1114-1119.doi: 10.3969/j.issn.2095-4344.0126

• 数字化骨科 digital orthopedics • 上一篇    下一篇

基于3D打印导航模块腰椎椎弓根螺钉置入的精确性

王 威,黎清波,蔡 磊,王大伟,刘伟军   

  1. 华中科技大学同济医学院附属普爱医院骨科,湖北省武汉市   430033
  • 出版日期:2018-03-08 发布日期:2018-03-08
  • 通讯作者: 刘伟军,华中科技大学同济医学院附属普爱医院骨科,湖北省武汉市 430033
  • 作者简介:王威,男,1982年生,湖北省谷城县人,2017年华中科技大学同济医学院毕业,博士,主治医师,主要从事脊柱外科方面的研究。

Accuracy of lumbar pedicle screw implantation based on three-dimensional printing navigation modules  

Wang Wei, Li Qing-bo, Cai Lei, Wang Da-wei, Liu Wei-jun   

  1. Department of Orthopedics, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430033, Hubei Province, China
  • Online:2018-03-08 Published:2018-03-08
  • Contact: Liu Wei-jun, Department of Orthopedics, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430033, Hubei Province, China
  • About author:Wang Wei, M.D., Attending physician, Department of Orthopedics, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430033, Hubei Province, China

摘要:

文章快速阅读:

 
 

 

文题释义:
3D打印:其实质是“激光快速成型技术”,也叫“增量技术”或“增材技术”,3D打印在计算机控制下将材料连接或固化以形成三维物体,其中材料被添加在一起(例如液体分子或粉末颗粒融合在一起)的过程。3D打印常用于快速成型和增材制造,对象可以具有几乎任何形状或几何形状,并且通常使用来自3D模型或其他电子数据源的数字模型数据来生成。
精准医疗:是提供医疗定制、医疗决定或产品为个别患者量身定制的一种医疗模式,精密医学中使用的工具可以包括分子诊断、成像和分析等,目前已经应用于多种类型的疾病治疗中。但是针对较为复杂、高难度的疾病,如脊柱肿瘤、脊柱侧弯等,仍然处于基础阶段。目前,人体解剖功能和结构的多样性、复杂性及疾病治疗效果的不稳定性,临床治疗仍是依靠临床经验进行诊治。由于医生水平的差异,尤其年轻医生,在某种程度上严重影响治疗及诊断的结果。
 
摘要
背景:椎弓根螺钉置入腰椎的手术过程需要长时间应用X射线影像确认椎弓根螺钉的置入位置,而计算机辅助手术导航技术由于辅助导航系统的费用昂贵、工序操作复杂等因素在临床应用上受到限制。
目的:基于3D打印导航模块的腰椎椎弓根螺钉置入腰椎骨折患者,验证导航模块置入腰椎椎弓根螺钉的精确性与可行性。
方法:根据50例腰椎骨折患者的CT数据,将数据信息导入Mimics中,建立三维腰椎模型。再依据建立的腰椎模型设计螺钉导航模块的模型,并采用3D打印技术分别制造出导航模块及腰椎实体模型。首先,在术前将导航模块置入腰椎标本实体上进行模拟椎弓根螺钉试验;其次,术中再应用螺钉导航模块辅助椎弓根螺钉置入腰椎;最后,术后通过CT检查与X射线评估螺钉置入的效果。
结果与结论:①设计的导航模块辅助12枚椎弓根螺钉置入腰椎,经过CT检查置入螺钉位置良好,都处于腰椎椎弓根内部,无螺钉穿破椎弓根皮质现象;②试验证明,椎弓根螺钉置入腰椎的精确性相对较高,全部螺钉的进钉方向、进钉点均与术前模拟效果基本一致;③提示基于3D打印导航模块的椎弓根螺钉置入腰椎的精确性高,能实现微创个体化椎弓根螺钉精确置入,操作方法较为简单,具有十分重要的意义。

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程
ORCID: 0000-0003-0133-9914(王威)

关键词: 3D打印, 腰椎椎弓, 导航模块, 脊柱植入物

Abstract:

BACKGROUND: The surgical procedure of pedicle screw placement in the lumbar spine requires a long time to confirm the insertion position of the pedicle screw by using X-ray images. The clinical application of computer-aided navigation techniques is limited, due to the high cost of auxiliary navigation system and complicated operation.

OBJECTIVE: Based on three-dimensional printing navigation module of lumbar pedicle screw implantation in patients with fracture of lumbar spine, to verify the accuracy and feasibility of the navigation module into lumbar pedicle screws.
METHODS: According to CT data of 50 patients with fracture of lumbar vertebra, the data were loaded into Mimics to establish a three-dimensional model of the lumbar spine. On the basis of the established model of pedicle screw navigation module, lumbar entity model and navigation module were made using three-dimensional printing technology. First of all, navigation module was preoperatively embedded in the lumbar spine specimen entity to simulate pedicle screw test. Second, screw navigation module was applied to assist lumbar pedicle screw insertion in lumbar vertebra during the operation. After operation, the effectiveness of the screw implantation was assessed using CT examination and X-ray.
RESULTS AND CONCLUSION: (1) The designed navigation module with 12 pedicle screws was inserted into lumbar vertebra. CT examination showed that screw position was good on the internal side of lumbar pedicle; no screws perforated the pedicle cortex. (2) Experiments showed that the accuracy of pedicle screws inserted into lumbar vertebra was relatively high. The direction and the site of the screws were basically identical to the preoperative simulation results. (3) Based on three-dimensional printing navigation module, the accuracy of pedicle screw implantation into the vertebral vertebra was high, and could realize accurate implantation of individualized pedicle screws. The minimally invasive surgery method is relatively simple and has the very vital significance. 

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程

Key words: Lumbar Vertebrae, Bone Nails, Tissue Engineering

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