使用通用与特定对象的肌肉特性对跨不同姿势模拟的脊柱负荷预测的影响
Nima Ashjaee1, Sidney Fels2, John Street3
1School of Biomedical Engineering, University of British Columbia, Vancouver, BC, Canada; International Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, BC, Canada.
Journal of biomechanics
|May 25, 2025
概括
特定于个体的肌肉骨模型对于脊柱形管理至关重要. 一般的肌肉特性显著改变脊柱压缩负荷,特别是在曲的姿势中,突出了对患者特定数据的需求.
科学领域:
- 生物力学 生物力学
- 肌肉骨系统的建模
- 脊柱形管理的管理
背景情况:
- 特定于个体的肌肉骨模型为成人脊柱形管理提供了潜力.
- 模型中的通用属性是可访问的,但可能会降低准确性.
- 缺乏特定于个体的软组织特性是临床限制.
研究的目的:
- 确定哪些肌肉生物力学特性和身体位置在通用模型和特定模型之间显示出显著差异.
- 评估这些差异对脊柱压缩负荷的影响.
主要方法:
- 使用OpenSim软件分析了250个对象特定的肌肉骨模型.
- 专注于四个肌肉参数:几何路径,最大同度力,最佳纤维长度和肌松长度.
- 通过使用线性混合效应和非参数统计模型,评估了11种姿势,包括站立和曲的姿势.
主要成果:
- 具体对象的几何路径 (13%) 和最大同度力 (8%) 显著影响了脊柱压缩负荷.
- 这些差异取决于姿势,曲的姿势对通用参数有更大的敏感性 (分别为17%和6%的差异).
- 最佳纤维长度和肌松长度对脊柱压缩负荷的影响最小.
结论:
- 具体的肌肉特性,特别是几何路径和最大同位体力,对于精确的肌肉骨模拟至关重要,特别是在曲姿势中.
- 一般性质可以导致脊柱压缩负载预测的显著偏差.
- 当没有对象特定的数据时,使用通用肌肉特性对站立姿势模拟的影响最小.
关键词:
几何路径的路径.最大的同位体力最大力.肌肉行动线的动作线.肌肉参数灵敏度 肌肉参数灵敏度肌肉骨系统的建模打开SimSim,可以使用它.最佳的纤维长度是最好的.个体特异性的肌肉特性肌松的长度 肌松的长度更多相关视频
06:28Biomechanical Changes Related to Low Back Pain: An Innovative Tool for Movement Pattern Assessment and Treatment Evaluation in Rehabilitation
Published on: December 13, 2024
448
06:21Postural Organization of Gait Initiation for Biomechanical Analysis Using Force Platform Recordings
Published on: July 26, 2022
2.5K
相关概念视频
01:22Generalized Hooke's Law
868
The generalized Hooke's Law is a broadened version of Hooke's Law, which extends to all types of stress and in every direction. Consider an isotropic material shaped into a cube subjected to multiaxial loading. In this scenario, normal stresses are exerted along the three coordinate axes. As a result of these stresses, the cubic shape deforms into a rectangular parallelepiped. Despite this deformation, the new shape maintains equal sides, and there is a normal strain in the direction of the...
868
01:28Classification of Skeletal Muscle Relaxants
2.4K
Skeletal muscle relaxants are a group of drugs that can reduce muscle stiffness and induce temporary paralysis to relieve pain. These agents can act centrally to reduce muscle tone or spasms in painful conditions such as multiple sclerosis (MS), amyotrophic lateral sclerosis (ALS), or spinal injuries; they are called antispasmodics or spasmolytics.
Peripherally acting skeletal muscle relaxants interfere with the neurotransmission at the neuromuscular end plate to induce paralysis during...
Peripherally acting skeletal muscle relaxants interfere with the neurotransmission at the neuromuscular end plate to induce paralysis during...
2.4K