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Updated: Sep 16, 2025

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一种功能总和方法,用于可重复确定脊柱坐标系统的功能总和方法
Tara F Nagle1, Jeremy G Loss1,2, Robb W Colbrunn1,2
1Department of Biomedical Engineering and Lerner Research Institute, Cleveland Clinic, 2111 E. 96th Street, Cleveland, OH 44106.
Journal of biomechanical engineering
|July 10, 2025
概括
创建脊柱坐标系统 (CSs) 的新功能聚合方法显著降低了观察者在测量脊柱运动中的可变性. 这种方法提高了体外脊柱测试的可重现性,以便更好地进行生物力学分析.
科学领域:
- 生物力学 生物力学
- 脊柱外科手术 脊柱外科手术
- 整形外科 整形外科 整形外科
背景情况:
- 在体外脊椎测试中准确测量脊椎间运动需要建立局部脊椎坐标系统 (CSs).
- 传统的解剖学CS依赖于里程碑式的收集,这容易引起观察者的变化,缺乏可重现性.
- 这种变化可以显著影响动力反应计算的准确性.
研究的目的:
- 提出一种新的功能聚合方法,用于在脊柱中确定可复制的局部CS.
- 为了比较功能总和CS的观察者变异性与传统的解剖学CS.
- 评估CS定义对脊柱运动反应变异性的影响.
主要方法:
- 三名观察员在一个全脊柱模型 (C2-L5) 和三个尸体腰椎 (T12-L5) 上收集了解剖学标志.
- 脊椎CS轴方向变化计算了解剖学和总体CS组.
- 在纯时刻负载条件下,使用两种CS方法计算了脊椎间动力学.
主要成果:
- 功能总和方法显著减少了观察者在脊椎CS轴方向上的变化,用于横向曲,轴旋转和曲/延伸.
- 与功能总体CS相比,与解剖学CS相比,功能总体CS的平均动力反应变化显著减少.
- 观察到侧向曲 (1.22° ± 0.72°),轴向旋转 (0.97° ± 0.53°) 和曲/延伸 (1.20° ± 1.26°) 的变化有具体的减少.
结论:
- 与传统的解剖学方法相比,功能聚合法为定义脊柱CS提供了更可重复的解决方案.
- 这种新的方法不受地标收集中的观察者差异的影响.
- 这些发现表明,在体外脊柱生物力学研究中,准确性和可靠性得到了提高.
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