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有限元分析和对丹尼斯-韦伯A和B侧骨骨折的不同固定结构的试点研究

Shuming Huang¹, Junkun Zhu², Hailin Xing¹

¹Department of Orthopedic Surgery, Lishui Hospital, Zhejiang University School of Medicine, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui Municipal Central Hospital, Lishui, Zhejiang, 323000, People's Republic of China.

BMC musculoskeletal disorders

|December 20, 2023

概括

与常规锁定板 (CLP) 相比,侧特定的侧多轴锁定解剖板 (FMLP) 为侧骨骨折提供了更好的稳定性. 添加一个断片间螺丝进一步提高了丹尼斯-韦伯A和B骨折中的生物机械性能.

科学领域:

骨科生物力学骨科生物力学
手术植入物技术的使用.
在医学上使用有限元分析.

背景情况:

移位侧骨骨折往往需要开放的减少和内部固定.
在韦伯A和B骨折中,锁定板与滞后螺丝的生物力学有效性是有争议的.
这项研究比较了两种锁定板设计用于侧面骨骨折固定.

研究的目的:

为了评估两种锁定板设计的生物力学性能,用于侧面骨骨折.
评估断片间螺丝对断裂固定稳定性的影响.
使用有限元模型,将特定于骨的侧翼多轴锁定解剖板 (FMLP) 与常规锁定板 (CLP) 进行比较.

主要方法:

从CT图像创建了一个三维有限元模型.
模拟了FMLP和CLP用于丹尼斯-韦伯A和B侧骨曲折固定,带有和没有断片间螺丝.
模拟单脚 (140N) 和双脚 (70N) 站立的轴承负荷被应用来分析·米塞斯应力 (VMS) 和元素位移.

主要成果:

带有断片间螺丝的FMLP在单脚条件下显示了骨,板和螺丝中最小的峰值von Mises应力 (VMS) 值.
在双腿站立条件下,VMS的峰值值在两种板类的两种板类中都显著下降.
对FMLP和CLP固定而言,断片间螺丝使用减少了峰值VMS和整体结构位移.

结论:

与CLP相比,FMLP在丹尼斯-韦伯A和B侧骨骨折中表现出优越的机械特性.
将断片间螺丝与锁定板结合起来,可以在简单的斜距离支柱骨骨折中提高稳定性.
FMLP显示出作为横向骨骨折治疗的生物机械优势替代品的潜力,需要进一步的临床研究.

关键词:

脚骨折脚骨折在脚骨折长管骨折长管骨折长管骨折长管骨折一个有限的元素.断裂固定方法断裂固定方法骨质合成是骨质的合成.

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