关于传统步态模型的准确性:区分标记者错位和软组织文物错误之间的区别
F Leboeuf1, A Barre2, K Aminian3
1Motion analysis service, Physical Medicine and Rehabilitation, Teaching Hopital of Nantes, France; School of Health & Society, The University of Salford, UK; Nantes Université, Movement - Interactions - Performance, MIP, UR 4334, F-44000 Nantes, France.
Journal of biomechanics
|September 10, 2023
概括
软组织人工物 (STA) 和标记物错位显著影响步态分析的准确性. 仅仅STA就导致了膝盖和部运动中的显著错误,影响了膝盖对齐的临床解释.
科学领域:
- 生物力学 生物力学
- 运动分析 运动分析
- 整形外科手术 整形外科手术
背景情况:
- 传统步态模型 (CGM) 在表示真正的骨运动中的准确性尚未得到充分理解.
- 标记器错位和软组织人工物 (STA) 是基于标记器的运动捕捉用于步态分析的已知局限性.
研究的目的:
- 量化侧膝标记 (KNE) 错位和STA在步态动力学上引入的错误.
- 评估这些错误的临床影响,特别是关于膝盖曲-伸缩-交叉谈话和横平面旋转.
主要方法:
- 来自13名全膝关节假肢患者的数据的二次分析.
- 同时使用双平面光学和基于标记器的运动捕捉.
- 对STA诱导的错误和标记物错位诱导的错误进行了分开的分析.
主要成果:
- 仅STA就带来了3.3° (膝盖曲),2.9° (膝盖绑架) 和6.7° (部旋转) 的平均误差.
- 标记器错位导致平均误差为0.9° (膝盖曲),4.0° (膝盖绑架) 和12.3° (部旋转).
- 单独的STA可以导致膝盖屈曲-伸缩交叉交谈,累积错误挑战内部/外部旋转 (<5°) 的准确跟踪.
结论:
- 软组织人工物显著导致步态分析错误,可能模仿膝盖对齐问题.
- 标记器错位也引入了实质性的错误,特别是在横平面旋转.
- 综合效应挑战了可靠的膝盖动力学测量,影响了临床解释.
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