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对锁定海绵螺丝的生物力学研究表明,在板固定中,故障率高于预期

Fatih Parmaksizoglu¹, Onur Cetin², Sinan Kilic³

¹Departmant of Orthopedics and Traumatology, Academic Hospital, Istanbul, Turkey. drfatihpar@gmail.com.

Scientific reports

|January 21, 2025

概括

螺丝拉出是用于骨质疏松性骨折的锁定板的关键故障. 这项研究揭示了单个头锁定海绵螺丝的技术问题,影响固定强度并导致故障.

科学领域:

整形外科手术整形外科手术
生物材料工程是生物材料的工程.
医疗器械设计医疗器械设计

背景情况:

锁定板越来越多地用于骨折固定,与传统压缩板相比,在骨质疏松性骨中提供了令人满意的结果.
螺丝拉出仍然是锁板系统中一个重要的故障模式,损害了固定完整性.

研究的目的:

为了研究使用锁定海绵式螺丝的锁定板的拉出故障特征.
为了比较FDA批准的锁定板系统 (LPS) 与骨质疏松性骨模型中的匿名锁定板系统 (LPuLSS) 的拉出力.

主要方法:

在实验室中使用PCF-15和PCF-10骨质疏松性骨模型评估螺丝拉出力.
测试涉及28个单独的板骨模型,在一台机器上被分散注意力,以记录螺丝分离力.

主要成果:

在PCF15模型中,第一组 (FDA批准的LPS) 的平均拉出力为606.82N,明显强于第二组 (LPuLSS) 的294.15N (P=0.025).
在PCF10模型中,3组 (FDA批准的LPS) 的平均值为166.50N,比4组 (LPuLSS) 的42.83N (P=0.002) 强度大388.74%.

结论:

单一的头锁定海绵螺丝表现出与线程距差异相关的重大技术问题,导致拉出故障.
这一问题在临床应用中构成风险,特别是在骨质疏松性骨固定中,通常使用锁定板.

关键词:

骨折骨折骨折骨折是一种锁定海绵状螺丝锁定螺丝锁定板上的锁定板.骨质疏松症是一种骨质疏松症.

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