颈部肌肉作用下颈椎牵引的生物力学特性

发布时间：2018-05-27 10:42

本文选题：颈椎 + 肌肉力　；参考：《医用生物力学》2017年02期

【摘要】：目的建立C1~7全颈椎三维有限元模型,研究其在颈部肌肉作用下颈椎牵引的生物力学特性,为临床颈椎牵引的治疗提供参考。方法建立正常颈椎的三维非线性有限元模型,在此基础上结合临床颈椎牵引的方法,利用生物力学分析软件进行建模仿真,在牵引重量一定的情况下,用后伸0°、10°、20°、30°、40°进行牵引,获得关节力和肌肉力,筛选合适的关节力和肌肉力对颈椎模型进行有限元分析。结果颈椎后伸牵引过程中,在肌肉力的作用下,颈椎椎体、椎间盘、钩椎关节的平均最大等效应力分别增加4.86、1.79、0.69 MPa,颈椎椎体的平均最大相对位移在矢状轴、垂直轴方向上分别增加5.53、0.63 mm。颈椎后伸牵引的生物力学特性与文献中的有限元分析结果相近。结论颈部肌肉对颈椎各椎体、椎间盘以及钩椎关节应力及位移的增加具有较大的促进作用。临床上行颈椎后伸牵引时,应考虑到颈部肌肉的作用,牵引角度不宜过大,推荐0°~20°是颈椎牵引初期相对安全的角度范围。
[Abstract]:Objective to establish a three-dimensional finite element model of C1~7 whole cervical spine, to study the biomechanical properties of cervical vertebra traction under the action of cervical muscles, and to provide a reference for the treatment of cervical traction. In the case of a certain traction weight, the traction was carried out at 0, 10, 20, 30, and 40 degrees, and the joint force and muscle force were selected for the finite element analysis of the cervical vertebra model. Results the cervical vertebra, intervertebral disc and uncinate joint under the action of muscle force in the extension of the cervical spine. The maximum equivalent stress was increased by 4.86,1.79,0.69 MPa respectively. The average maximum relative displacement of the cervical vertebrae was in the sagittal axis, and the biomechanical characteristics of the extension traction of the cervical spine in the vertical axis were similar to those in the literature. Conclusion the neck muscles were stressed on the vertebral bodies, intervertebral discs and uncinate joints in the cervical vertebrae. The increase of displacement has a great promoting effect. The effect of cervical muscles should be taken into account in the extension of cervical spine, and the angle of traction should not be too large. It is recommended that 0 degree ~20 degree is a relatively safe angle in the early stage of cervical traction.
【作者单位】：河南科技大学医学技术与工程学院;上海交通大学医学院附属第九人民医院骨科上海市骨科内植物重点实验室;河南科技大学第三附属医院骨科;河南科技大学机电工程学院;上海硅步科学仪器有限公司;
【基金】：国家重大科学研究计划(2012CB933604,2011CB013300) 国家高技术研究发展计划“863计划”(2015AA020308) 国家自然科学基金项目(81171707;8157090044) 上海市科委产学研医项目(14DZ1941102,15DZ1942104) 上海市卫生系统重要疾病联合攻关项目(2013ZYJB0501) 上海教委重点学科建设基金(J50206) 上海市卫生计生系统重要薄弱学科基金(2015ZB0404) 上海交通大学医学院高峰高原计划研究型医师项目(20152224);上海交通大学医学院转化医学创新基金项目
【分类号】：R318.01;R681.5

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