了解腰部主病角度对行走过程中脊椎负荷分布的影响
Jie Chen1, Patria A Hume1,2,3,4, Hannah Wyatt2,5
1Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand.
概括
在行走过程中改变的腰部主症 (LL) 影响脊柱对齐并增加脊椎力量. 无论是有限的还是过度的LL都可以通过增加脊柱关节和脊椎的身体负荷来加剧腰痛 (LBP).
科学领域:
- 生物力学 生物力学
- 脊柱健康 脊柱健康
- 肌肉骨研究 研究
背景情况:
- 异常的斜腰脊骨平衡是已知的导致腰部疼痛 (LBP) 的因素.
- 了解在行走等动态活动中脊柱对齐变化的机械后果对于LBP管理至关重要.
- 腰部主症 (LL) 是斜腰脊骨骨平衡的一个关键组成部分.
研究的目的:
- 为了研究模拟的斜腰脊骨平衡,特别是改变的腰部主病 (LL),在行走时对腰部脊椎接触力的影响.
- 在不同的LL条件下,量化腰椎内压力和剪切力的变化.
主要方法:
- 开发一个全身OpenSim模型,采用定制的腰部关节机制.
- 在18名健康参与者中模拟自选的快速步行步态.
- 使用生物机械模型估计腰椎负荷,包括压力和剪切力.
主要成果:
- 步行时有限的LL显著增加了由此产生的脊椎压力和剪切力,并增加了脊椎体的压缩.
- 过度的LL导致脊椎切削力增加,侧面关节和L5/S1脊椎体的压力增加.
- 这两种偏离最佳LL的偏差都表明了可能导致LBP的生物力学变化.
结论:
- 在行走过程中,腰部主病的模拟变化显著影响腰部脊柱生物力学.
- 无论是减少的还是过度的腰部主症都会增加脊椎接触力,可能会加剧或引发腰部疼痛.
- 这些发现凸显了在运动过程中保持适当的斜腰脊柱和骨盆脊柱对齐对于脊柱健康的重要性.
相关概念视频
01:16Vertebral Column: Regions and Curvature
4.1K
The vertebral column or spine is a flexible column that supports the head, neck, and body and allows for their movements. It also protects the spinal cord.
Regions of the Vertebral Column
In an adult, the spine is subdivided into five regions: the cervical, the thoracic, the lumbar, the sacral, and the coccygeal region. The spine initially develops as a series of 33 vertebrae; after 20 years of age, the nine bones in the sacral region, five sacral, and four coccygeal bones fuse to form...
Regions of the Vertebral Column
In an adult, the spine is subdivided into five regions: the cervical, the thoracic, the lumbar, the sacral, and the coccygeal region. The spine initially develops as a series of 33 vertebrae; after 20 years of age, the nine bones in the sacral region, five sacral, and four coccygeal bones fuse to form...
4.1K
01:29Load along a Single Axis
391
In structural engineering, the analysis of beams subjected to varying loads is a critical aspect of understanding the behavior and performance of these structural elements. A common scenario involves a beam subjected to a combination of different load distributions.
Consider a beam of length L subjected to a varying load, which is a combination of parabolic and trapezoidal load distribution along the x-axis. In this case, it is essential to determine the resultant loads, their locations, and...
Consider a beam of length L subjected to a varying load, which is a combination of parabolic and trapezoidal load distribution along the x-axis. In this case, it is essential to determine the resultant loads, their locations, and...
391
01:16Elastic Curve from the Load Distribution
261
The structural behavior of beams under distributed loads is critical for engineering analysis, which focuses on predicting how beams bend and react under such conditions. Different types of beams (e.g., cantilever, supported, or overhanging) behave differently under distributed load conditions.
For all beams, the analysis of the beam's reaction to distributed loads begins by understanding the relationship between a beam's load and the resulting shear forces and bending moments.
For all beams, the analysis of the beam's reaction to distributed loads begins by understanding the relationship between a beam's load and the resulting shear forces and bending moments.
261