旋转手套肌应变分布从上部到下部肌附着部发生变化,肩部绑架增加
Kyosuke Hoshikawa1, Maria Prado2, Nariyuki Mura3
1Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, TX, USA; Graduate School of Health Sciences, Yamagata Prefectural University of Health Sciences, Yamagata, Japan.
Journal of the mechanical behavior of biomedical materials
|April 19, 2025
概括
旋转手套 (RC) 亚区域的负荷影响肌应变分布在不同的拉动角度不同. 了解这些生物力学差异对于治疗RC撕裂和优化外科修复至关重要.
科学领域:
- 骨科生物力学 骨科生物力学
- 肌肉骨研究的研究.
- 旋转手套的解剖学 旋转手套的解剖学
背景情况:
- 旋转手套 (RC) 包含上肌 (SSP),下肌 (ISP) 和下肌 (SSC) 肌肉,具有不同的解剖学亚区域.
- 之前的研究表明,SSP和ISP肌之间的机械相互作用受肩膀引角度的影响.
- 在RC子区域内的菌株分布变化,包括SSC,在不同的绑架角度仍未得到充分研究.
研究的目的:
- 研究完整的旋转袖 (SSP,ISP,SSC) 和它们的子区域中的菌株分布.
- 为了分析不同的吸收角度 (25°和45°) 如何影响肌肉负荷下的应变模式.
- 为了阐明加载特定RC肌肉子区域的生物力学后果.
主要方法:
- 使用了八个新鲜冷的尸体完好无损的肩膀.
- 使用MTS系统对SSP,ISP和SSC肌肉及其子区域施加张力.
- 在25°和45°的关节绑架处测量肌的胸口侧面的表面应变.
主要成果:
- 负载SSP肌肉或它的前部区域在45°绑架时没有显著的应变差异.
- 负载SSP后部区域导致中侧面的缩应变,并增加了绑架.
- 加重ISP或SSC肌肉/亚区域的负荷导致下部足迹的压力显著增加,绑架率增加.
结论:
- 压力分布模式在SSP肌的前后区域之间有显著的差异.
- 越来越大的吸收角度会改变轮肌的特定区域的应变度.
- 这些发现强调了在管理旋转手套撕裂和修复时需要考虑不同的亚区域和肌特征的必要性.
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