在单腿跳跃着陆过程中影响ACL应变的外部因素的计算研究
Harish Rao1, Ryan Bakker1, Stewart McLachlin1
1Mechanical and Mechatronics Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON, N2L 3G1, Canada.
BMC musculoskeletal disorders
|April 23, 2024
概括
这项研究开发了膝盖的有限元 (FE) 模型,发现降落时增加干部,部和脚的屈曲角度可以减少前十字带 (ACL) 的应变. 这为预测ACL损伤风险提供了一种新方法.
科学领域:
- 生物力学 生物力学
- 运动医学 运动医学
- 计算建模 计算建模
背景情况:
- 非接触前十字带 (ACL) 损伤在体育运动中很常见,经常发生在动态膝盖运动中.
- 现有的有限元 (FE) 模型缺乏在动态活动期间准确复制膝盖几何,动力学和肌肉力量.
- 量化膝盖运动和ACL应变之间的关系对于预防伤害至关重要.
研究的目的:
- 开发和验证一个全面的膝盖FE模型.
- 为了研究三角形平面膝盖动力学,动力学和ACL应变之间的关系.
- 建立一个实证关系,以预测动态活动期间的ACL应变.
主要方法:
- 一个尸体膝盖的3D FE模型是通过分割和网格骨,软骨和阴茎来创建的.
- 用实验方法定义了带插入地点,并根据生理膝关节运动数据验证了该模型.
- 用十名参与者的运动捕捉和刚体建模数据进行了单腿跳跃着陆的模拟.
主要成果:
- 该FE模型预测跳跃着陆期间ACL最大应变为3.5±2.2%,与实验结果一致.
- 没有发现身体重量,地面反应力和腰平面参数与ACL应变之间的显著相关性.
- 多变量回归显示,增加的干部,部和脚屈曲角度显著降低了ACL应变 (R2 = 90.04%,p < 0.05).
结论:
- 一种"软着陆"技术,其特点是增加干部,部和脚的曲,可以明显减少ACL应变.
- 开发的FE模型和经验关系可以提高ACL损伤风险的预测.
- 这项研究为在动态体育活动中改进ACL伤害预防策略提供了基础.
更多相关视频
06:35Using Gold-standard Gait Analysis Methods to Assess Experience Effects on Lower-limb Mechanics During Moderate High-heeled Jogging and Running
Published on: September 14, 2017
9.1K
06:36Biomechanical Analysis Methods to Assess Professional Badminton Players' Lunge Performance
Published on: June 11, 2019
10.6K
相关概念视频
Normal Strain under Axial Loading
468
Normal strain under axial loading is an important concept in the field of mechanics of materials. Axial loading implies the application of a force along the axis of a material, like a column or bar. This force can either compress or stretch the material. In the context of axial loading, normal strain is the deformation experienced by the material in the direction of the loading force. It's calculated as the change in length divided by the original length of the material. This unitless ratio...
468
General Case of Eccentric Axial Loading
185
Unsymmetrical bending occurs when the bending moment applied to a structural member does not align with its principal axis. This misalignment leads to complex stress distributions and deflection patterns that differ from symmetrical bending, which are essential for designing structures to withstand different loading conditions.
Consider a member subjected to equal and opposite forces that are applied along a line that does not coincide with the member's neutral axis. In unsymmetrical...
Consider a member subjected to equal and opposite forces that are applied along a line that does not coincide with the member's neutral axis. In unsymmetrical...
185
Stresses under Combined Loadings
152
When analyzing a bent tube with a circular cross-section subjected to multiple forces, it is crucial to determine the stress distribution in order to maintain structural integrity under varied load conditions.
The process begins by slicing the tube at critical points and analyzing the internal forces and stress components at these sections, focusing on the centroid. Normal stresses, generated by axial forces and bending moments, are either compressive or tensile and vary across the section from...
The process begins by slicing the tube at critical points and analyzing the internal forces and stress components at these sections, focusing on the centroid. Normal stresses, generated by axial forces and bending moments, are either compressive or tensile and vary across the section from...
152
Eccentric Axial Loading in a Plane of Symmetry
189
Eccentric axial loading occurs when an axial load is applied away from the centroidal axis of a structural member. This scenario is common in engineering, where structural elements may not be directly aligned due to various design or functional requirements.
189
