中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (53): 7979-7984.doi: 10.3969/j.issn.2095-4344.2016.53.011

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

3D打印数字化导航模块辅助股骨颈中空拉力螺钉的精准置入

陈 旭,余正希,陈宣煌,张国栋,吴献伟,蔡涵华,吴长福,戴玉林   

  1. 福建医科大学莆田学院附属医院教学医院,南方医科大学附属莆田医院,莆田学院附属医院骨科,福建省莆田市 351100
  • 修回日期:2016-10-12 出版日期:2016-12-23 发布日期:2016-12-23
  • 通讯作者: 陈宣煌,副主任医师,福建医科大学莆田学院附属医院教学医院,南方医科大学附属莆田医院,莆田学院附属医院骨科,福建省莆田市 351100
  • 作者简介:陈旭,男,1987年生,福建省仙游县人,医师,2015年福建医科大学毕业,硕士,主要从事数字化骨科学研究。
  • 基金资助:

    福建省莆田学院科研基金项目(2015044);福建省自然科学基金资助项目(2015J01507)

Three-dimensional printing digital navigation modules-assisted accurate placement of femoral neck hollow lag screws

Chen Xu, Yu Zheng-xi, Chen Xuan-huang, Zhang Guo-dong, Wu Xian-wei, Cai Han-hua, Wu Chang-fu, Dai Yu-lin   

  1. Department of Orthopedics, Teaching Hospital of Fujian Medical University; Affiliated Putian Hospital of Southern Medical University; Affiliated Hospital of Putian University, Putian 351100, Fujian Province, China
  • Revised:2016-10-12 Online:2016-12-23 Published:2016-12-23
  • Contact: Chen Xuan-huang, Associate chief physician, Department of Orthopedics, Teaching Hospital of Fujian Medical University; Affiliated Putian Hospital of Southern Medical University; Affiliated Hospital of Putian University, Putian 351100, Fujian Province, China
  • About author:Chen Xu, Physician, Master, Department of Orthopedics, Teaching Hospital of Fujian Medical University; Affiliated Putian Hospital of Southern Medical University; Affiliated Hospital of Putian University, Putian 351100, Fujian Province, China
  • Supported by:

    the Scientific Research Foundation of Putian University, No. 2015044; the Natural Science Foundation of Fujian Province, No. 2015J01507

摘要:

文章快速阅读:

 

 

文题释义:
3D打印技术:出现在20世纪90年代中期,是利用光固化和纸层叠等技术的最新快速成型装置。它与普通打印工作原理基本相同,打印机内装有液体或粉末等“打印材料”,与电脑连接后,通过电脑控制把“打印材料”一层层叠加起来,最终把计算机上的蓝图变成实物。
Mimics软件:是Materialise公司发明的一种医学影像控制系统,它是模块化结构的软件,可以根据用户的不用需求有不同的搭配。MIMICS是一套高度整合而且易用的3D图像生成及编辑处理软件,它能输入各种扫描的数据(CT、MRI),建立3D模型进行编辑,然后输出通用的CAD(计算机辅助设计)、FEA(有限元分析),RP(快速成型)格式,可以在PC机上进行大规模数据的转换处理。
 
摘要
背景:计算机辅助骨科技术可以帮助医生制定更加精确的术前计划和手术模拟,而3D打印技术则为虚拟设计和实施中架设了一座桥梁,将设计的手术方案精确地付诸于实施。
目的:研究Mimics软件数字化设计结合3D打印导航模块辅助股骨颈中空拉力螺钉精准置入的关键技术,并在尸体标本上验证,观察效果。
方法:采用成人尸体骨盆标本10个,制作20侧股骨颈骨折模型,经连续薄层CT扫描,采集Dicom格式图像。Mimics软件三维重建、确定中空拉力螺钉置入钉道、三维测量,根据骨面解剖结构设计带钉道的导航模块并3D打印,导向螺钉置入,完成内固定手术。观察卡位、置钉情况,以CT扫描评价置钉效果。
结果与结论:共制作20个导航模块,植入60枚螺钉,观察股骨头及股骨颈周围骨质,未见螺钉穿透。术后行CT扫描重建,发现螺钉与术前设计相比,进钉点,进钉方向、长度均与Mimics软件中模拟的预定理想进钉点、方向和长度一致,准确率100%。导航模块和相对应的股骨大转子骨性结构贴合紧密,嵌合度良好,在应用时卡位及稳定性良好。说明在数字化设计及3D打印导航模块的辅助下,股骨颈中空拉力螺钉能精准置入到理想位置。

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:
0000-0001-9441-3014(陈宣煌)

关键词: 骨科植入物, 数字化骨科, 股骨颈骨折, 导航模块, 3D打印, 螺钉, 福建省自然科学基金

Abstract:

BACKGROUND: Computer-assisted orthopedic technique can help physicians develop more accurate preoperative planning and surgical simulation. 3D printing technology erects a bridge for the virtual design and implementation, and the design of the surgical program will be accurately put into practice.

OBJECTIVE: To investigate Mimics software digital design combined with 3D printing navigation modules-assisted accurate placement of femoral neck hollow lag screw, verify on corpse specimen, and observe its effects.
METHODS: Ten adult cadaveric pelvic specimens were used to make 20 models of femoral neck fracture. After continuous thin-slice CT scan, Dicom format images were collected for three-dimensional (3D) reconstruction by using Mimics software to identify the path of hollow lag screw and for 3D measurement. According to anatomic structure of bone surface, navigation modules with screw path were designed for 3D printing. The screw was implanted and the fixation was finished. The position and screw placement were observed. CT scanning was used to evaluate its effects.
RESULTS AND CONCLUSION: Totally 20 navigation modules were designed and 60 screws were implanted to observe the bone around femoral head and femoral neck. No screw penetration occurred. After surgery, reconstruction with CT scanning found that compared with preoperatively, the site, direction and length of screw insertion were consistent with that established by Mimics software. The accuracy rate was 100%. The navigation modules were closely bonded to the corresponding bony structure of greater trochanter of femur. Chimerism was good. The position and stability were good in the application. These results suggested that with the help of digital design and 3D printing navigation module, femoral neck hollow lag screw can be accurately placed into the ideal position.

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: Femoral Neck Fractures, Surgery, Computer-Assisted, Tissue Engineering

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