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不同的前后技术的生物力学特性,用于atlantoaxial固定:一个有限元素分析

Jie Li¹, Shuai Cao², Dong Guo¹

¹Department of Orthopedics, The Second Affiliated Hospital of Xi'an Jiaotong University, 157Th West Fifth Road, Xi'an, 710004, Shaanxi Province, China.

Journal of orthopaedic surgery and research

|June 26, 2023

概括

前跨关节螺丝 (ATS) 和马格尔螺丝提供了良好的atlantoaxial稳定性. 后部系统可能会出现螺丝故障的风险,而Harms板和横向的atlantoaxial减速板 (TARP) 更好地保护相邻的段落.

科学领域:

脊柱的生物力学
整形外科手术整形外科手术
有限元素分析的研究.

背景情况:

大西洋轴固定技术各不相同,但生物力学差异尚未完全理解.
评估前部与后部固定对相邻的脊柱段的影响至关重要.

研究的目的:

为了比较不同前后亚特兰大轴固定方法的生物力学效应.
评估对固定和非固定椎脊柱段的影响.

主要方法:

使用C0-C7有限元模型来模拟六种固定技术:哈姆斯板,TARP,ATS,马格尔螺丝,后螺丝板和螺丝杆.
计算的参数包括运动范围 (ROM),面关节力 (FJF),磁盘应力,螺丝应力和骨-螺丝接口应力.

主要成果:

在ATS和Magerl螺丝上显示最小C1/2ROM (0.1°-1.0°).
后面的螺丝板和螺丝杆系统表现出高螺丝 (77.6-1018.1 MPa) 和骨螺丝接口 (58.3-499.0 MPa) 的应力.
哈姆斯板和TARP在非固定段中显示了低的ROM (3.2°-17.6°),磁盘应力 (1.3-7.6 MPa) 和FJF (3.3-106.8 N).

结论:

ATS和Magerl螺丝可以提供卓越的atlantoaxial稳定性.
后面的螺杆和螺杆板系统可能会带来更高的螺杆松动或断裂的风险.
与其他方法相比,Harms板和TARP技术在缓解非固定段的退化方面似乎更有效.

关键词:

亚特兰大轴心固定方式一个有限的元素.非固定段变性不固定段变性细分稳定性的细分稳定性压力集中度压力集中度

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