混合III人形腰椎背脊负荷在垂直冲击下的负荷
Narayan Yoganandan1, Jason Moore1, Tim A Westerhof2
1Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI 53226, USA.
Military medicine
|August 20, 2024
概括
这项研究研究了混合III腰椎脊柱.
科学领域:
- 生物力学 生物力学
- 脊柱损伤研究 脊柱损伤研究
- 人类形状的测试设备
背景情况:
- 与战斗有关的腰椎损伤通常归因于垂直冲击力.
- 开发有效的伤害预防策略需要了解脊柱生物力学和测试保护装置.
- 标准化测试需要使用物理设备与生物模型一起进行匹配对测试.
研究的目的:
- 为了确定在垂直冲击负载下Hybrid III腰椎的生物力学反应.
- 评估干质量对脊柱对垂直冲击的反应的影响.
- 为开发伤害评估风险曲线提供数据,以确保战斗机的安全.
主要方法:
- 使用定制的垂直加速器装置,对Hybrid III腰椎的下端施加冲击.
- 在六轴负载单元之间安装脊柱,以测量两端的力.
- 进行了匹配对重复性测试,响应特征测试和不同干质量 (12-16公斤) 的测试.
主要成果:
- 可重复性测试显示在测试中最小的变化 (<3%的轴力差异).
- 轴力在4.9-25.2 kN (下端) 之间,切削力为轴力的11±6%.
- 增加的干质量保持了高的重复性 (<2%的轴向力差) 并显示了类似的力特性.
结论:
- 混合III腰椎主要通过轴承负荷传递垂直冲击,与人类受伤模式一致.
- 轴力随着速度的增加而增加,这表明有可能发展出受伤风险曲线.
- 需要进行进一步的匹配对测试,以确定男性和女性混合III腰椎的损伤标准.
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