中国组织工程研究 ›› 2023, Vol. 27 ›› Issue (9): 1346-1351.doi: 10.12307/2023.252

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

基于虚拟现实技术的旋提手法下颈椎间孔结构变化动态分析

刘广伟1,冯敏山1,2,朱立国1,2,尹逊路2,陈焯贤2   

  1. 中国中医科学院望京医院,1中医正骨技术北京市重点实验室,2脊柱二科,北京市   100102
  • 收稿日期:2022-02-08 接受日期:2022-04-18 出版日期:2023-03-28 发布日期:2022-07-01
  • 通讯作者: 冯敏山,医学博士,主任医师,中国中医科学院望京医院,中医正骨技术北京市重点实验室,脊柱二科,北京市 100102
  • 作者简介:刘广伟,男,1989年生,河南省漯河市人,汉族,硕士,助理研究员,主要从事运动类医学研究。
  • 基金资助:
    国家自然科学基金青年科学基金项目(81302992),项目负责人:冯敏山;国家中医药管理局中医药创新团队及人才支持计划项目(ZYYCXTD-C-202003),项目负责人:朱立国

Dynamic analysis of structural changes in the lower cervical intervertebral foramen during rotation-traction manipulation by virtual reality technology

Liu Guangwei1, Feng Minshan1, 2, Zhu Liguo1, 2, Yin Xunlu2, Chen Zhuoxian2   

  1. 1Beijing Key Laboratory of Manipulative Technique, 2Second Department of Spine, Wangjing Hospital of China Academy of Chinese Medical Sciences, Beijing 100102, China
  • Received:2022-02-08 Accepted:2022-04-18 Online:2023-03-28 Published:2022-07-01
  • Contact: Feng Minshan, MD, Chief physician, Beijing Key Laboratory of Manipulative Technique, and Second Department of Spine, Wangjing Hospital of China Academy of Chinese Medical Sciences, Beijing 100102, China
  • About author:Liu Guangwei, Master, Assistant researcher, Beijing Key Laboratory of Manipulative Technique, Wangjing Hospital of China Academy of Chinese Medical Sciences, Beijing 100102, China
  • Supported by:
    National Natural Science Foundation of China (Youth Program), No. 81302992 (to FMS); Chinese Medicine Innovation Team and Talent Support Plan Project of the State Administration of Traditional Chinese Medicine, No. ZYYCXTD-C-202003 (to ZLG)

摘要:

文题释义:
旋提手法:是一种定位牵引的颈椎治疗手法,患者在治疗前经过适度的颈部放松,在医生的指导下自主完成极限位的旋转-屈曲-再旋转,使颈椎处于关节绞索状态,医生使用手臂固定患者头部,依靠自身力量迅速完成预牵引、提扳等动作,以达到颈椎治疗的目的。
运动捕捉:是一种用于准确测量运动物体在三维空间运动状况的技术,其工作原理是在运动物体的关键部位设置跟踪器(Marker点),经计算机处理得到三维运动数据,具有精度高、可实现动态三维运动分析的特点,被广泛应用于虚拟现实、人体工程学、模拟训练、生物力学、运动学等研究方面。

背景:神经根型颈椎病是一类临床常见病,旋提手法是治疗神经根型颈椎病的有效手段,椎间孔的测量是临床上重要的参考标准。
目的:分析不同状态下旋提手法对下颈椎间孔结构变化的影响,探讨旋提手法的生物力学作用机制。
方法:颈椎标本置入螺钉方便CT成像时定位,首先应用MTS材料机在新鲜颈段标本上模拟不同状态下的旋提手法,同时利用运动捕捉技术获取旋提手法过程中Marker点的运动轨迹;然后,通过螺旋CT薄层扫描颈椎标本,运用Mimics软件进行三维颈椎实体重建,依据旋提手法过程下颈椎体的运动轨迹,通过Autodesk maya软件进行多模医学图像三维配准实现动态虚拟现实仿真,进行动态图像处理;最后,分别采用ImageJ软件及Adobe photoshop软件测量旋提手法前后下颈椎间孔的纵径及面积。
结果与结论:①定位牵引有利于提前打开下颈椎间孔,牵引效果略差于中立位牵引,但定位牵引具有更好的安全性;②扳动力在150 N以内,旋提手法的扳动力越小,颈椎间孔的纵径及面积的增加幅度也越小;扳动力超过150 N之后,颈椎间孔纵径及面积的增加幅度影响不大;③旋提手法通过增大下颈椎间孔可能有助于松解椎间孔周缘的粘连,从而缓解神经根刺激症状。

https://orcid.org/0000-0002-3753-2081 (刘广伟)

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

关键词: 神经根型颈椎病, 旋提手法, 颈椎间孔, 虚拟现实, 动态, 定位牵引, 中立位牵引

Abstract: BACKGROUND: Cervical spondylotic radiculopathy is a common clinical disease. Rotation-traction manipulation is an effective means to treat cervical spondylotic radiculopathy. The measurement of intervertebral foramen is an important reference standard in clinic.  
OBJECTIVE: To analyze the effects of different states of rotation-traction manipulation on the structural changes of lower cervical intervertebral foramen, and to explore the biomechanical mechanism of rotation-traction manipulation.
METHODS:  Cervical spine specimens were implanted with screws to facilitate positioning during CT imaging. Firstly, MTS material machine was used to simulate the rotation manipulation with different positioning angles on fresh cervical specimens. The motion trajectory of Marker points was obtained by motion capture technology. Then, the cervical specimens were scanned by thin-layer spiral CT. The three-dimensional cervical solid reconstruction was carried out by using Mimics software. According to the motion trajectory of cervical vertebra under the process of rotation-traction manipulation, the multi-mode medical image three-dimensional registration was carried out by Autodesk Maya software to realize dynamic virtual reality simulation, and then the dynamic image processing was carried out. Finally, ImageJ software and Adobe Photoshop software were used to measure the longitudinal diameter and area of lower cervical intervertebral foramen before and after rotation-traction manipulation.  
RESULTS AND CONCLUSION: (1) Positioning traction was helpful to open the lower cervical intervertebral foramen in advance. The traction effect was slightly worse than neutral traction, but positioning traction had better safety. (2) When the pulling force was within 150 N, the smaller the pulling force of rotation-traction manipulation, the smaller the increase of the longitudinal diameter and area of the lower cervical intervertebral foramen. After the pulling force exceeded 150 N, the increase of longitudinal diameter and area of cervical intervertebral foramen had little effect. (3) Rotation-traction manipulation may help to loosen the adhesion around the intervertebral foramen by increasing the lower cervical intervertebral foramen, so as to alleviate the symptoms of nerve root stimulation.

Key words: cervical spondylotic radiculopathy, rotation-traction manipulation, cervical intervertebral foramen, virtual reality, dynamic, positioning traction, neutral traction

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