在脊柱切除过程中对仪器结构的生物力学分析:当你需要它时的稳定性!
K Aaron Shaw1, Brad Niese2, Daniel J Sucato2
1Department of Orthopaedic Surgery, Children's Mercy Kansas City, Kansas City, MO.
Spine
|October 30, 2024
概括
在脊柱切除 (VCR) 期间,脊柱的最佳稳定取决于结构的刚性. 增加杆径,固定点,使用更硬的材料,如-增强稳定性,这对于防止视频录像机手术后的神经损伤至关重要.
科学领域:
- 脊柱外科手术 脊柱外科手术
- 生物机械工程 生物机械工程
- 整形外科的研究研究.
背景情况:
- 脊柱切除 (VCR) 可以纠正严重的脊柱形,但会造成不稳定.
- 稳定的固定是视频录像机后必不可少的,以防止神经损伤.
- 目前的做法是使用临时单边杆,但最佳配置尚未研究.
研究的目的:
- 调查视频录像机期间脊柱稳定最佳结构.
- 为了确定影响VCR结构刚性的生物力学因素.
主要方法:
- 一个单边视频录像机模型的生物力学测试,具有50°的形变形和30毫米的切割.
- 评估杆材质,直径,配置和固定点.
- 循环负荷后在曲和延伸下测量系统刚度.
主要成果:
- 较大的杆直径显著增加了单个螺丝的刚性.
- -棒比更硬,但直径不会影响单独的Co-Cr的硬度.
- 双螺丝结构和双杆配置显著提高了刚性.
结论:
- 在VCR期间脊柱结构的硬是多因素的.
- 增加的杆子直径,固定点,更硬的材料和多个杆子提高了稳定性.
- -棒需要额外的固定点,以从更大的直径中获益.
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