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生物力学评估的多杆构造稳定一个S1 pedicle减去骨切除术 (PSO):一个有限元分析

Niloufar Shekouhi¹, Sudharshan Tripathi¹, Vijay K Goel¹

¹Engineering Center for Orthopedic Research Excellence (E-CORE), Departments of Bioengineering and Orthopaedic Surgery, University of Toledo, Toledo, OH, USA.

Spine deformity

|November 30, 2023

概括

这项研究开发了一种有限元模型,用于神圣脚减去骨切除术 (S1-PSO) 稳定. 多棒配置表明,虽然更多的棒增加了性,但最佳的前部负载共享对于愈合至关重要.

科学领域:

脊柱生物力学脊柱生物力学
手术稳定技术手术稳定技术
有限元素分析的研究.

背景情况:

圣脚减去骨切除术 (S1-PSO) 是一种复杂的脊柱手术.
稳定S1-PSO需要强大的生物机械支持.
优化多杆结构对于手术成功至关重要.

研究的目的:

为S1-PSO.开发和验证一个有限元 (FE) 模型.
为了比较S1-PSO稳定各种多杆配置的生物力学特性.

主要方法:

一个经过验证的FE spinopelvic模型被调整为30°S1-PSO.
模拟了五种使用阴茎螺丝,主杆 (PR) 和辅助杆 (AR) 的多杆配置.
模拟分析了运动范围 (ROM),杆应力,PSO力和L5-S1盘应力.

主要成果:

在4杆 (HR + 2 Med-AR) 结构中观察到更高的PSO ROM.
5和6杆结构显示出最低的PSO ROM和主要杆应力.
4杆 (Lat-AR),5杆和6杆结构显示出最低的PSO力和L5-S1盘应力.

结论:

4杆 (HR + Med-AR) 结构提供了最小的刚性和最高的前PSO力.
虽然5杆和6杆结构提供了更大的刚性,但它们可能会阻碍治疗所需的前部负载共享.
平衡结构刚性和前部负载共享对于有效的S1-PSO稳定至关重要.

关键词:

有限元素分析的研究.多杆结构构建的多杆结构.脚减去骨质切除术 (osteotomy) 的方法棒的压力使棒的压力增加.圣骨骨切除术是一种神圣骨切除术.

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