忽视被动脊柱结构的影响:使用前进动力学和逆动力学肌肉骨方法进行定量调查
Laura Meszaros-Beller1,2,3, Maria Hammer3,4, Syn Schmitt1,3,4
1School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, QLD, Australia.
Frontiers in physiology
|June 16, 2023
概括
在逆动力学模型中包括像带和圆盘这样的被动脊柱结构显著降低了脊柱生物力学计算的肌肉力量. 这提高了估计联合负载的准确性.
科学领域:
- 生物力学 生物力学
- 肌肉骨系统建模
- 脊柱生理学 脊柱生理学
背景情况:
- 逆动力学 (ID) 分析对于脊柱生物力学和肌肉力量估计至关重要.
- 当前的ID模型往往简化了脊柱结构,忽略了被动元素,限制了准确性.
- 准确的动力学数据是必不可少的,但使用当前的技术,很难获得.
研究的目的:
- 确定包括被动脊柱结构 (带,椎间盘) 对关节力和扭矩的影响.
- 评估被动元素如何影响平衡功能脊柱单位关节负荷所需的肌肉力量.
主要方法:
- 一个通用的胸椎脊柱模型从demoa转移到OpenSim.
- 该模型经过逆动力学分析,使用来自前进动力学模拟的现有曲延伸动力学数据.
- 被动结构被逐渐添加,以评估它们对联合力和扭矩的个人贡献.
主要成果:
- 结合椎间盘和带,压力负荷降低了-200%,前部扭矩降低了-75%.
- 这些减少表明,平衡关节负荷所需的净肌肉力量显著下降.
- 模型动力学和动力学在demoa和OpenSim平台之间成功交叉验证.
结论:
- 在逆动力学分析中,被动脊柱结构对于准确计算关节负荷至关重要.
- 这项研究表明,在两个不同的软件平台 (demoa和OpenSim) 上,通用脊柱模型的交叉验证成功.
- 未来的研究可以利用这些验证的模型来比较脊髓运动的神经肌肉控制策略.
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