中国组织工程研究 ›› 2021, Vol. 25 ›› Issue (36): 5872-5877.doi: 10.12307/2021.357

• 骨与关节生物力学 bone and joint biomechanics • 上一篇    下一篇

不同体位下斜扳手法治疗腰椎间盘突出的三维有限元分析

卢  钰1,2,郑太才1,王  琪1,3,张  荆1,程  强1,吉富涛1,尹本敬1,2,保超宇1,2,贾  涛1,2,李骥征1,2,李具宝1,2
  

  1. 1云南中医药大学,云南省昆明市   650500;2云南省中医医院,云南省昆明市   650021;3昆明市中医医院,云南省昆明市   650051
  • 收稿日期:2019-12-24 修回日期:2019-12-26 接受日期:2020-11-03 出版日期:2021-12-28 发布日期:2021-09-18
  • 通讯作者: 李具宝,博士,副主任医师,云南中医药大学,云南省昆明市 650500;云南省中医医院,云南省昆明市 650021
  • 作者简介:卢钰,男,1989年生,昆明医科大学毕业,硕士,主治医师,主要从事脊柱退变性疾病的基础及临床研究。
  • 基金资助:
    国家自然科学基金(81860862,81460736),项目负责人:李具宝;云南省应用基础研究计划面上项目(2011FB146),项目负责人:李具宝;云南省中青年学术和技术带头人后备人才(云科人发[2019]7号),项目负责人:李具宝;云南省高层次中医药人才学科带头人及云南省卫生科技计划项目(2017NS161),项目负责人:李具宝

Three-dimensional finite element analysis of the oblique-pulling manipulation on lumbar disc herniation in different body positions

Lu Yu1, 2, Zheng Taicai1, Wang Qi1, 3, Zhang Jing1, Cheng Qiang1, Ji Futao1, Yin Benjing1, 2, Bao Chaoyu1, 2, Jia Tao1, 2, Li Jizheng1, 2, Li Jubao1, 2   

  1. 1Yunnan University of Chinese Medicine, Kunming 650500, Yunnan Province, China; 2Yunnan Provincial Hospital of Traditional Chinese Medicine, Kunming 650021, Yunnan Province, China; 3Kunming Municipal Hospital of Traditional Chinese Medicine, Kunming 650051, Yunnan Province, China
  • Received:2019-12-24 Revised:2019-12-26 Accepted:2020-11-03 Online:2021-12-28 Published:2021-09-18
  • Contact: Li Jubao, MD, Associate chief physician, Yunnan University of Chinese Medicine, Kunming 650500, Yunnan Province, China; Yunnan Provincial Hospital of Traditional Chinese Medicine, Kunming 650021, Yunnan Province, China
  • About author:Lu Yu, Master, Attending physician, Yunnan University of Chinese Medicine, Kunming 650500, Yunnan Province, China; Yunnan Provincial Hospital of Traditional Chinese Medicine, Kunming 650021, Yunnan Province, China
  • Supported by:
    the National Natural Science Foundation of China, No. 81860862, 81460736 (to LJB); General Project of Yunnan Applied Basic Research Program, No. 2011FB146 (to LJB); Reserve Talents for Young and Middle-Aged Academic and Technical Leaders in Yunnan Province, No. YKRF [2019] 7 (to LJB); Disciplinary Leader of High-Level Chinese Medicine Talents in Yunnan Province and Yunnan Health Science and Technology Program, No. 2017NS161 (to LJB)

摘要:


文题释义:

斜扳手法:患者侧卧位,患侧在上,患侧下肢屈膝屈髋,健侧下肢伸直,术者面对患者而立,一手掌按住其肩前部,另一手以肘部抵住其臀部,双手协同用力作相反方向的缓缓推动,使其腰部被动扭转。当旋转到最大限度时再发力扳动,一般此时可听到清脆的弹响声,左、右各扳1次,常用于治疗椎间盘突出、小关节紊乱、急性腰扭伤等。
三维有限元分析:利用数学近似的方法对真实物理系统(几何和载荷工况)进行模拟。利用简单而又相互作用的元素(即单元),就可以用有限数量的未知量去逼近无限未知量的真实系统。

背景:斜扳手法治疗腰椎间盘突出症疗效可靠,已被临床广泛应用,但是不同体位下斜扳手法的生物力学作用机制、疗效有何不同目前尚不明确。
目的:利用三维有限元方法分析不同体位下斜扳手法治疗腰椎间盘突出症的生物力学机制及其作用效果,从而优化手法治疗的操作方案,指导提高临床疗效。
方法:采集腰椎间盘突出症患者腰椎CT数据,利用Mimics和Ansys软件建立脊柱L4-5运动单元的三维有限元模型。分别模拟斜扳手法作用于前屈30°、水平0°和后伸10° 3种不同体位状态,分析不同体位下斜扳手法对椎间盘包括髓核和纤维环应力的影响,以及椎间盘与神经根之间位移的变化情况。

结果与结论:①在前屈30°、水平0°和后伸10° 3种不同体位斜扳手法作用下,腰椎间盘髓核内应力均明显减小,且后伸10°时减小最为明显;②在前屈30°、水平0°和后伸10° 3种不同体位斜扳手法作用下,纤维环应力均增大,且在后伸10°时纤维环应力增加最大;③前屈30°体位时,在斜扳手法力矩作用下,椎间盘后外侧与神经根之间位移增大,可能更有利于缓解神经根压迫产生的症状;但在后伸10°体位下,椎间盘与神经根之间位移减小,可能不利于缓解神经根压迫产生的症状。

https://orcid.org/0000-0002-3741-5643 (卢钰) 

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: 腰椎, 运动节段, 三维有限元, 斜扳手法, 生物力学

Abstract: BACKGROUND: Oblique-pulling manipulation showed great effectiveness in treating patients with lumbar disc herniation, and had been extensively used in clinic; however, the biomechanics and efficacy of the oblique-pulling manipulation in different positions are still undefined.  
OBJECTIVE: To analyze the biomechanical effect of the oblique-pulling manipulation in different body positions of lumbar disc herniation using three-dimensional finite element, so as to guide its treatment and associated clinical work.
METHODS:  A three-dimensional finite element model of L4-5 was developed from the CT scan images of a volunteer. The oblique-pulling manipulation was simulated to study the influence in different positions (anteflexion 30°, neutral position 0° and extension 10°) on the stress on the intervertebral disc, including the nucleus pulposus and annulus fibrosus, and the changes in the displacement between the intervertebral disc and the nerve root under the oblique-pulling manipulation.  
RESULTS AND CONCLUSION: (1) Under the oblique-pulling manipulation in different body positions: anteflexion 30°, neutral position 0°, and extension 10°, the stress in the intervertebral disc nucleus pulposus was significantly reduced; the most obvious reduction occurred when the extension was 10°. (2) Under the oblique-pulling manipulation in different body positions: anteflexion 30°, neutral position 0°, and extension 10°, the stress on the annulus was increased; the most obvious increase occurred when the extension was 10°. (3) When anteflexion was 30°, the disc was far away from the nerve root under oblique-pulling manipulation, which helps to relieve the symptoms of nerve compression. However, in the extension of 10°, the opposite is true.

Key words: lumbar, segmental motion, three-dimensional finite element, oblique-pulling manipulation, biomechanics

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