中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (13): 2333-2338.doi: 10.3969/j.issn.2095-4344.2013.13.008

• 脊柱植入物 spinal implant • 上一篇    下一篇

三维重建腰椎椎弓根螺钉置入的精确性

杨 波,方世兵,尹 飚,宋 磊,王 簕,万盛钰,谢景开   

  1. 广州医学院第三附属医院骨科,广东省广州市 510150
  • 收稿日期:2012-07-19 修回日期:2012-09-18 出版日期:2013-03-26 发布日期:2013-03-26
  • 通讯作者: 方世兵,在读硕士,广州医学院第三附属医院骨科,广东省广州市 510150 fangshibing@yahoo.com.cn
  • 作者简介:杨波☆,男,1965年生,四川省遂宁市人,汉族,2002年中山大学毕业,博士,教授,主要从事脊柱外科研究。
  • 基金资助:

    2008年广东省科技计划项目(2008A 030201015);广州市科学技术经费项目( 2011J4100052)。

Accuracy of pedicle screw placement based on three-dimensional lumbar reconstruction

Yang Bo, Fang Shi-bing, Yin Biao, Song Lei, Wang Le, Wan Sheng-yu, Xie Jing-kai   

  1. Department of Orthopedics, the Third Affiliated Hospital of Guangzhou Medical University, Guangzhou 510150, Guangdong Province, China
  • Received:2012-07-19 Revised:2012-09-18 Online:2013-03-26 Published:2013-03-26
  • Contact: Fang Shi-bing, Studying for master’s degree, Department of Orthopedics, the Third Affiliated Hospital of Guangzhou Medical University, Guangzhou 510150, Guangdong Province, China fangshibing@yahoo.com.cn
  • About author:Yang Bo☆, Doctor, Professor, Department of Orthopedics, the Third Affiliated Hospital of Guangzhou Medical University, Guangzhou 510150, Guangdong Province, China

摘要:

背景:三维重建技术已经广泛应用于椎弓根螺钉置入前规划,但是就其预测参数的准确性目前尚未见直接的分析与报道。
目的:基于CT三维重建技术应用于临床,对腰椎椎弓根螺钉置入前指导作用的精确性作初步分析。
方法:在Mimics软件下,随机对30例行腰椎椎弓根螺钉内固定的患者共136个椎弓根行内固定前CT三维重建,并通过内固定前模拟模块预测钉长、直径、水平面角及矢状面角度并与内固定后实际数据进行统计学比较。
结果与结论:内固定前通过Mimics软件对腰椎行三维重建,设计最佳钉道并模拟置钉,预测椎弓根螺钉长、直径、水平面角及矢状面角度与通过C型臂及内固定中导航系统等方式置钉后实际数据的差异无显著性意义(P > 0.05),并且内固定后行CT扫描见置钉位置及长度均良好。说明通过Mimics软件对腰椎进行三维重建模拟置钉并制定置钉参数,能比较精确的指导内固定中实际置钉,提高椎弓根螺钉的置钉安全。

关键词: 骨关节植入物, 脊柱植入物, 三维重建, 椎弓根螺钉, 精确性, 腰椎, 水平面角, 矢状面角度, 模拟置钉, 置钉参数, 内固定, 省级基金, 骨关节植入物图片文章

Abstract:

BACKGROUND: The three-dimensional reconstruction techniques have been widely used in preoperative planning of pedicle screw placement, but the direct accuracy analysis of the forecast parameters has not yet been reported.
OBJECTIVE: To analyze the accuracy of three-dimensional reconstruction based on computerized tomography in the application of lumbar pedicle screw placement.
METHODS: By the using of the Mimics software, we selected 136 lumbar pedicles to perform the preoperative three-dimensional reconstruction, which were randomly selected from 30 patients treated with pedicle screw fixation. By the simulation modules of Mimics, the length, diameter, transverse section angle and sagital section angle were preoperatively predicted. Then, the data were statistically compared with the actual data of the patients postoperatively.
RESULTS AND CONCLUSION: Through the three-dimensional lumbar reconstruction preoperatively by Mimics software, the best channel of pedicle screw placement was designed and the placement of the screw was simulated. The length, diameter, transverse section angle and sagital section angle of preoperative predicted pedicle screw were pre-measured. There was no significant difference of the data when compared with the actual data obtained from the C-arm and intra-fixation navigation system after placement (P > 0.05). The postoperative actual location and length of pedicle screws were excellent from CT scans. Through the preoperative three-dimensional lumbar reconstruction by Mimics software, the parameters of simulating pedicle screw placement can precisely guide and improve the safety of pedicle screws placement.

Key words: bone and joint implants, spinal implants, three-dimensional reconstruction, pedicle screw, accuracy, lumbar, transeverse section angle, sagital section angle, simulate pedicle screw placement, screw parameters, internal fixation, provincial grants-supported paper, photographs-containing paper of bone and joint implants

中图分类号: