ArborSim: 接式,分支式,OpenSim路由,用于构建具有复杂肌结构的多关节附属体模型
Xun Fu1, Jack Withers2, Juri A Miyamae1
1Robotics, University of Michigan, Ann Arbor, Michigan, United States of America.
PLoS computational biology
|July 5, 2024
概括
通过模拟分支的肌单元,ArborSim软件模型复杂,多关节的生物结构. 这提高了像脊柱和尾巴这样的结构的肌肉骨建模精度,揭示了分支如何影响运动.
科学领域:
- 生物力学 生物力学
- 计算生物学 计算生物学
- 肌肉骨系统建模
背景情况:
- 像OpenSim这样的肌肉骨系统的计算模型对于运动研究至关重要.
- 模拟高度关节的生物结构 (例如,脊柱,尾巴) 具有复杂的,多关节跨度肌肉和分支肌对现有的软件构成重大挑战.
- 这些复杂结构的准确建模对于理解各种生物运动和功能至关重要.
研究的目的:
- 介绍ArborSim,这是一款旨在有效创建高度关节生物结构的肌肉骨模型的新软件.
- 研究分支肌架构对关节结构的关节动力学的影响.
- 确定哪些形态特征最能影响结构对肌分支的敏感性.
主要方法:
- 开发了ArborSim软件,用于构建具有分支肌架构的肌肉骨模型.
- 构建了简化的关节模型来分析对分支的敏感性.
- 使用分支和并行肌单位的模型之间的关节动力学比较.
- 评估了诸如肌分支数,分支之间的关节和肌肉纤维长度与单位长度比等参数的影响.
主要成果:
- 肌分支的数量和分支之间的关节的数量被确定为分支建模方法最敏感的参数.
- 分支和并行模型之间的动力学差异并没有遵循一个可预测的模式,复杂性越来越高.
- 增加肌肉比例导致分支和并行肌单位之间的动力学差异更大.
- 肌分支和近接肌肉/肌之间的压力和应变相互作用显著影响整体系统动力学.
结论:
- 在OpenSim中,ArborSim可以创建复杂的分支肌模型,克服现有软件的局限性.
- 了解肌分支对于准确模拟高度关节的生物结构的动力学至关重要.
- 这种方法提供了对轴/尾骨相互作用,尾巴进化和复杂运动力学的更深入的见解.
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