中国组织工程研究

中国组织工程研究 ›› 2011, Vol. 15 ›› Issue (35): 6479-6482.doi: 10.3969/j.issn.1673-8225.2011.35.005

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

基于CT图像建立的小儿枢椎齿状突病理性骨折三维数字化模型

周  霞1，赵华福1，周  烨1，万  磊2，张宏斌1，王  捷1   

  1. 解放军广州军区广州总医院，1医学实验科，2骨科医院，广东省广州市  510010
  • 收稿日期:2011-03-10 修回日期:2011-07-19 出版日期:2011-08-27 发布日期:2011-08-27
  • 作者简介:周霞，女，1985年生，浙江省嘉兴市人，汉族，2006年解放军第四军医大学毕业，技士，主要从事快速成型与数字骨科研究。 lancaomei06@yahoo.com.cn
  • 基金资助:

    广东省骨科矫形技术及植入材料重点实验室建设基金资助项目(2060204)。

Digital three-dimensional model reconstruction in pathological fractures of pediatric odontoid process based on CT images

Zhou Xia1, Zhao Hua-fu1, Zhou Ye1, Wan Lei2, Zhang Hong-bin1, Wang Jie1   

  1. 1Department of Medical Research, 2Department of Orthopedic Surgery, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou  510010, Guangdong Province, China
  • Received:2011-03-10 Revised:2011-07-19 Online:2011-08-27 Published:2011-08-27
  • About author:Zhou Xia, Technician, Department of Medical Research, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, Guangdong Province, China lancaomei06@yahoo.com.cn
  • Supported by:

    the Construction Foundation of Guangdong Provincial Key Laboratory of Orthopedic Technology and Implant Materials, No. 2060204*  

PDF

280

被引次数

6

摘要：

背景：在进行寰枢椎椎弓根内固定过程中，由于儿童的骨骼局部解剖结构复杂及椎弓根结构常存在变异，且置钉时极易损伤椎动脉或脊髓，导致严重后果。
目的：基于CT扫描图像建立精确的小儿枢椎齿状突病理性骨折数字化模型，评估其在临床诊断及内固定治疗中的应用效果。
方法：将1例2岁枢椎齿状突病变患儿的CT扫描结果导入三维建模Simpleware软件中进行三维重建，用逆向工程与快速成型原理制作个体化的骨骼模型实物并经树脂后处理，利用该模型指导内固定治疗。
结果与结论：成功建立了小儿寰枢椎及齿状突的三维立体模型，可直接观察病变部位，精确测量置钉入点、角度及其他数据，对内固定方案设计起到了良好的指导作用，从而提高了寰枢椎椎弓根内固定治疗的安全性和准确性。

关键词: 齿状突, 病理性骨折, 数字化, 三维重建, 快速成型

Abstract:

BACKGROUND: Children’s bone structure of the pedicle anatomy is often complicated and variable, the three-dimensional model of odontoid process fracture via three-dimensional reconstruction can be used to guide the surgery and improve the success rate of surgery.
OBJECTIVE: To study an accurate digital model of pathologic odontoid process fracture in pediatrics and its clinical applications.
METHODS: One child with pathologic odontoid process fracture, 2 years old, was chosen, and his slice scanning CT images were read by Simpleware software for three-dimensional reconstruction. Based on reverse engineering and rapid prototyping technique, the individual skeleton model was obtained. Subsequently treated by resin, the model was guided to the surgery.
RESULTS AND CONCLUSION: The three-dimensional model of pediatric atlantoaxial including odontoid process was successfully established. With the model, the region could be directly observed, and the position and angel of screw fixation could be measured accurately, which played a good role on the operation design. The three-dimensional model intuitively and accurately reflected the structure of patient’s atlantoaxial and odontoid fracture, which improved the safety and accuracy of atlantoaxial pedicle screw fixation.

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