球体特性对肌肉激活模式和关节负荷在单边过程中的影响
Benedikt Sagl1, Martina Schmid-Schwap2, Eva Piehslinger2
1Center for Clinical Research, University Clinic of Dentistry, Medical University of Vienna, 1090, Vienna, Austria.
Journal of the mechanical behavior of biomedical materials
|January 18, 2024
概括
这项研究开发了一个in silico模型来模拟生物力学. 结果显示,更小,更柔软的食物丸子可以减少关节 (TMJ) 的负荷,支持当前的关节障碍 (TMD) 自治指南.
科学领域:
- 生物医学工程 生物医学工程
- 生物力学 生物力学
- 计算建模 计算建模
背景情况:
- 涉到复杂的肌肉协调,但详细的肌肉激活模式很难测量.
- 高力可以增加关节 (TMJ) 的负荷,可能导致关节疾病 (TMD).
- 目前对时关节生物力学的体内研究受限于患者安全问题.
研究的目的:
- 开发一种新的in silico模型,用于模拟口过程中的肌肉招募和TMJ生物力学.
- 为了研究食物螺栓性质 (大小,刚度,位置) 和关节机械应力之间的关系.
- 根据临床TMD自我管理建议验证计算发现.
主要方法:
- 开发了一个计算模型,集成骨的刚性身体动力学,TMJ盘的有限元分析和肌肉的线条执行器.
- 采用前进动力学跟踪方法,以根据观察到的下部运动优化肌肉激活.
- 模拟了256种食物螺栓特征的组合,以分析动力学,肌肉激活和TMJ盘压力 (von Mises).
主要成果:
- 该模型与现有测量结果相比,准确地复制了下下肢动力学.
- 肌肉激活模式在模拟中保持一致,其大小因球体大小和硬度而异.
- 较小和更柔软的食物球体观察到TMJ负荷和机械应力减少.
结论:
- 在模型提供了一个可行的方法来研究TMJ生物力学和肌肉招募在过程中.
- 模拟结果支持当前的临床指导方针,建议在管理TMD时使用柔软的小食物.
- 这项研究加强了TMD自我管理策略中饮食修改的证据基础.
更多相关视频
06:46In Vivo Functional Assessment of Rat Masseter Muscle Following Surgical Creation of a Volumetric Muscle Loss (VML) Injury
Published on: November 15, 2024
334
07:26Assessing Pupil-linked Changes in Locus Coeruleus-mediated Arousal Elicited by Trigeminal Stimulation
Published on: November 26, 2019
8.1K
相关概念视频
01:20Motor Unit Stimulation
1.6K
When the neuron of a motor unit fires an action potential, it triggers a series of events, leading to a twitch contraction in the muscle fibers. The process of excitation-contraction coupling is crucial in relaying the action potential to the muscle fibers.
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
1.6K
01:22Muscle Stimulation Frequency
2.2K
The contraction strength of muscles is regulated by motor neurons, which modulate the frequency of action potentials dispatched to the motor units based on the body's requirements. This process of varying the muscle stimulation frequency allows muscles to contract with a force that is precisely tailored to the needs of the moment, whether lifting a feather or a heavy box.
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...
2.2K