前方可变角度锁定中和板优于传统的张力带电线,用于治疗横横骨骨折

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Majd Tarabichi¹, Nirav Mungalpara², Asher Lichtig²

¹Department of Orthopaedic Surgery University of California, San Francisco San Francisco California USA.

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概括

与张力带电线 (TBW) 相比,可变角度锁定中和板 (VA LNP) 为骨骨折固定提供了优越的生物机械稳定性. 这项研究发现,VA LNP显著减少了尸体骨的移位和增加了尸体骨的负载到故障.

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
创伤研究研究创伤研究

背景情况:

骨骨折是常见的损伤,需要进行手术固定.
传统的固定方法,如张力带电线 (TBW) 在提供稳定性方面存在局限性.
新的固定技术旨在改善结果和承载能力.

研究的目的:

为了比较两种混合固定结构的生物机械性能,用于横断骨骨折.
为了评估带有前方可变角度锁定中和板 (VA LNP) 的通道螺丝与带有TBW cerclage的通道螺丝的有效性.
为了确定哪种结构提供了卓越的稳定性和负载到故障特性.

主要方法:

在18个人体尸体样本中创建了横向的中体骨头骨折.
标本被分为两组 (每组n=9) 用VA LNP或TBW固定,结合管螺丝.
循环负荷 (500个循环) 评估断裂位移,然后进行轴向负载到故障测试.

主要成果:

在循环负荷 (p=0.004) 后,VA LNP组与TBW组 (0.77 ± 0.54 mm) 相比,VA LNP组的骨折位移明显较小 (0.09 ± 0.12 mm).
在VA LNP组 (1359 ± 21.53 N) 中,平均负载到故障的时间明显高于TBW组 (780.1 ± 22.62 N) (p=0.007).

结论:

前方可变角度锁定中和板提供优越的生物力学优势,而不是张力带电线,用于简单的横向骨骨折,当与头螺丝一起使用时.
这两种固定方法都是可行的,但VA LNP提供了增强的稳定性和承载能力.
TBW仍然是一个有价值的选择,特别是考虑到它的负载到故障限制.

关键词:

前方可变角度锁定中和板的中和板.道螺丝螺丝的螺丝.循环负载测试试验循环负载测试试验拉力失效是因为拉力失效.张力带电线张力带电线横横的骨头骨折横横的骨头骨折

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