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评估股骨头塌风险固定后切除:有限元分析

Xishan Li¹, Xiang Zhou^1,2, Jie Yang¹

¹Department of Trauma Surgery, Orthopedics and Plastic Surgery, University Medical Center Göttingen, Göttingen, Germany.

Frontiers in bioengineering and biotechnology

|March 21, 2025

概括

腿部部骨折的固定移除可能会导致崩的风险. 骨移植螺丝孔可以通过改善生物机械行为和潜在地预防股骨头骨硬化 (ONFH) 来降低这种风险.

科学领域:

骨科生物力学骨科生物力学
骨的愈合和再生.
骨折的固定和并发症和并发症

背景情况:

腿部部骨折是常见的骨科损伤.
并发症包括非结合和股骨头骨硬化 (ONFH).
螺丝孔周围的骨质硬化,固定后的去除增加了ONFH的风险,但生物力学数据有限.

研究的目的:

为了评估内部固定物移除后的股骨头塌风险.
为了研究在去除螺丝的地方移植骨的生物力学效应.

主要方法:

用于大腿骨解剖结构重建和崩区域识别的CT数据.
带有和没有骨移植的实验模型,使用三重穿孔螺丝 (3CS),带有穿孔螺丝的动态部螺丝 (DHS+CS) 和股骨部系统 (FNS).
在正常和硬化螺杆孔模型中分析应力分布,应力值,应力指数和应力范围.

主要成果:

DHS+CS显示总体压力最高;3CS在崩区域的压力最高.
3CS配置导致了最大的应变范围.
与非移植模型相比,骨移植模型的峰值,平均压力和应变值较低.

结论:

部部系统 (FNS) 的螺丝孔对部头部崩的机械风险较低.
硬化性螺丝孔增加了崩的风险;骨移植可能会改善生物力学结果.
骨移植后的固定移除可能会降低股骨头崩的可能性.

关键词:

股骨头的头部崩腿部部骨折腿部部骨折有限元分析是有限元分析.内部固定装置的移除,移除.螺丝孔的配置螺丝孔的配置

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