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部面状囊带力学:基于对象特定的解剖学和运动学的估计
Maryam Nikpasand1, Rebecca E Abbott2, Craig C Kage2
1Department of Mechanical Engineering University of Minnesota-Twin Cities Minneapolis Minnesota USA.
JOR spine
|October 2, 2023
概括
开发特定于患者的椎有限元模型对于理解面状囊带生物力学至关重要. 这些模型揭示了个体解剖学和运动如何影响脊柱压力和应变.
科学领域:
- 生物力学 生物力学
- 计算建模计算建模
- 脊柱的解剖学 脊柱的解剖学
背景情况:
- 要了解面状囊带 (FCL) 在椎脊柱力学中的作用,需要检查它与其他脊柱部件的相互作用.
- 特定对象的有限元素 (FE) 模型提供了一种方法来模拟在生理负载下下椎运动段,特别是当患者数据可用时.
研究的目的:
- 开发和演示一种方法来创建3D特定对象的椎下部有限元素模型,重点是面状囊带生物力学.
- 评估模型特异性 (几何,动力学,材料特性) 对FCL应变和应力的影响.
- 突出患者特异性数据在准确建模椎脊柱力学方面的重要性.
主要方法:
- 在平面头部运动期间创建了针对特定主体的3D下椎脊柱模型,使用患者衍生的几何和动力学,从平面头部运动期间的双平面视频放射学.
- 通过将表面贴合到估计的带骨附着区域来生成FCL几何形状.
- 将人类宫FCL纤维结构和材料特性纳入模型中.
- 根据提取的动力学,对脊椎应用了位移控制的边界条件.
主要成果:
- 特定对象的模型表明,由于非对称的动力学和解剖学,FCL菌株场中的不对称性,强调需要针对患者的具体方法.
- 计算的FCL应变场主要由脊椎形态和运动驱动,显示与构成模型的独立性.
- 应力场对构成方程的依赖性更大,与宫FCLs的受限制运动相一致.
结论:
- 通过将实验动力学与多尺度计算模型集成,建立了一种方法来创建特定主体的宫脊柱模型.
- 这种方法可以研究与椎脊柱生物力学相关的各种临床问题.
- 这项研究强调了患者特定的解剖学和运动学数据在准确模拟脊柱行为的关键作用.
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