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甲手腕缩短对手指强度和关节运动的影响:一个尸体生物力学研究
Alfonso Mejia1, Asher Eli Lichtig1, Arnab Ghosh2
1Chicago Department of Orthopaedics, University of Illinois, Chicago, IL.
Journal of hand surgery global online
|July 31, 2023
概括
骨折后的甲手腕缩短不会影响手指关节的运动,但会显著降低握力. 强度损失大约为每毫米缩短的6.5%,对精细运动功能有影响.
科学领域:
- 整形外科手术 整形外科手术
- 生物机械工程 生物机械工程
- 手部手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手 ...
背景情况:
- 甲手腕骨折是常见的手部损伤.
- 临床和生物机械研究显示,关于可接受的手指后肢缩短的差异.
- 之前的研究还没有最终确定损害手指功能的缩短值.
研究的目的:
- 在不影响手指运动和力量之前,确定骨折后最大可接受的手指后缩.
- 为了研究甲手腕缩短和手中的功能结果之间的关系.
主要方法:
- 使用了十个新鲜冷的尸体手.
- 一个定制的外部固定器稳定了手腕下部,一个部分被切除并用3D打印的插件取代.
- 模拟了手指的曲,并用逐渐小的插件记录了关节角度和手指尖力.
主要成果:
- 在任何程度的缩短的情况下,没有观察到在元手腕关节,近端关节或远端关节关节角度的统计学意义上的变化.
- 随着手指端缩短的增加,最大指尖力显著下降.
- 计算出每毫米缩短的指纹强度损失约为6.5%.
结论:
- 甲手腕缩短不会影响手指曲的运动范围.
- 随着手指缩短,手指强度的显著减少发生.
- 虽然由于食指的贡献,平均握力可能不会受到显著影响,但精细运动强度可能会受到损害.
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