部旋转对旋转手套应变,负载和动力学的影响:一个体外研究
Inês Santos1,2, Lieselotte Pichler3, Matthias F Pietschmann3,4
1Musculoskeletal University Center Munich (MUM), University Hospital, LMU Munich, Munich, Germany. ines.santos@med.uni-muenchen.de.
Biomedical engineering online
|June 20, 2025
概括
阻断肩部旋转会增加上和下的压力,特别是在撕裂时. 这项生物力学研究揭示了部头部转移的改变,在反向L形眼中有限制的旋转.
科学领域:
- 肩关节的生物力学.
- 旋转手套肌肉功能和损伤. 旋转手套肌肉功能和损伤.
背景情况:
- 脊上关节对于肩膀绑架,稳定和旋转至关重要.
- 超脊椎裂可能会影响部头部的旋转和旋转手套内的负载分布.
研究的目的:
- 为了研究受限部旋转和升高对旋转袖子负荷,应变和动力学的影响.
- 为了在完整和撕裂的旋转手套条件下比较这些效应.
主要方法:
- 在12个尸体肩膀中模拟活跃的部升高至30°.
- 测试了自由和阻塞的部旋转条件.
- 创建了50%和100%宽的半月形和反向L形的超脊椎裂.
主要成果:
- 受到约束的部旋转显著增加了两种撕裂类型的上脊椎负荷力和应变.
- 运动范围在超过一半的受阻旋转的标本中显著减少.
- 一个100%的反向L形撕裂显示前部头部翻译与阻塞旋转,而不是后部翻译与自由旋转.
结论:
- 限制部头部旋转可以提高上和下的压力.
- 由于其外部旋转功能的原因,在绑架期间,Infraspinatus菌株最初较高.
- 小旋转手套撕裂可能不会显著改变部旋转,由于补偿的 subscapularis 负载.
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