剩余旋转子子子区域的补偿负载共享 保存部分和大规模撕裂中的 Glenohumeral 机械
Kyosuke Hoshikawa1,2, Philip M Jacobs3, Nariyuki Mura2
1Department of Biomedical Engineering and Chemical Engineering, UT San Antonio, San Antonio, Texas.
The Journal of bone and joint surgery. American volume
|February 4, 2026
概括
剩余的旋转手套 (RC) 肌肉可以在撕裂时部分恢复肩膀关节机制. 然而,这种补偿在先进的撕裂中是有限的,可能需要手术干预.
科学领域:
- 整形外科 整形外科 整形外科
- 生物力学 生物力学
- 肩部外科手术 肩部外科手术
背景情况:
- 旋转手套 (RC) 撕裂很普遍,导致肩部疼痛和功能障碍.
- 正常的腺腹机械依赖于平衡的RC肌肉力量对.
- 个别RC子区域在破裂大小的接触力学中的作用尚不清楚.
研究的目的:
- 调查剩余RC次区域的生物力学贡献.
- 在渐进的RC撕裂中分析膜部接触力学和部头部翻译.
- 为了评估剩余的RC肌肉对补偿负荷的影响.
主要方法:
- 八个尸体肩膀经历了解剖和创建四个渐进的RC撕裂模型.
- 装载条件包括完整状态,卸载状态和补偿状态.
- 测量了部头部转移和部沟接触参数.
主要成果:
- 没有负载的眼显著增加了部头部翻译,并减少了接触力/面积.
- 剩余RC次区域的补偿负荷减少了上/后翻译.
- 接触力学部分恢复,但压力仍然在大撕裂中升高.
结论:
- 剩余的RC子区域提供部分恢复肩部机械在眼.
- 晚期撕裂的补偿是有限的,这表明需要进行手术修复.
- 有针对性的强化可能有利于早期的眼; 晚期的眼可能需要 subscapularis 修复.
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