在高强度和带中对双链结的结构进行生物机械评估
Mehar Dhillon1,2, Tatjana Pastor1,3, Ivan Zderic1
1AO Research Institute Davos, Davos, Switzerland.
概括
新的动态高强度 (DC) 和带 (DT) 与传统 (FW) 相比,需要更少的安全投,以获得100%的节点安全. 动态 (DC,DT) 和标准带 (ST) 通过两次投获得安全性,而FW需要三次.
科学领域:
- 生物材料科学 生物材料科学
- 手术技术 手术技术
- 机械工程 机械工程
背景情况:
- 一种新的动态 (DC) 和带 (DT) 使用注入盐的芯吸引水,增强在流体环境中的组织近似性.
- 传统的高强度 (FW) 和带 (ST) 广泛使用,但可能需要不同的节点安全参数.
研究的目的:
- 评估安全投的数量如何影响动态 (DC,DT) 和常规 (FW,ST) 线/带的节点安全,使用牛和尼斯节点配置.
- 为了比较动态与常规材料的最终力和节点滑动,当它们与100%安全性所需的最低投相稳定时.
主要方法:
- 使用FW,ST,DC和DT材料绑定牛和尼斯结.
- 外科医生结用1-3次交替的投确保了主要结的基础.
- 在生理条件下的拉力测试评估了结的滑动,最终的力和最小的抛出,以获得100%的安全性.
主要成果:
- 100%的节点安全性是在DC,DT和ST两种节点类型中实现的,为DC,DT和ST进行了2次保证投,而为FW进行了3次投.
- 与牛结相比,尼斯结的最终力在DT (p=0.001) 和DC (p=0.019) 中显著更高,滑动较少,使用最小的保证投.
结论:
- 动态 (DC,DT) 和标准带 (ST) 仅需要2次保证结100%的安全性,而传统 (FW) 则需要3次.
- 尼斯结提供了优越的最终力 (DT) 和降低滑动 (DC) 与牛结相比,在使用最小数量的保证投时.
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