Do non-rearfoot runners experience greater second metatarsal stresses than rearfoot runners?
Do non-rearfoot runners experience greater second metatarsal stresses than rearfoot runners?
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非后足跑步者比后足跑步者承受更大的第二跖骨压力吗？
DOI：
10.1016/j.jbiomech.2021.110647
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发表时间：
2021
影响因子：
2.4
通讯作者：
Ellison MA
中科院分区：
文献类型：
--
作者：
Ellison MA
第二跖骨应力性骨折是跑步者常见且有问题的损伤。众所周知，足部着地模式的选择会影响外部动力学和运动学，但其对跖骨内部负荷的影响尚不清楚。各种复杂性的模型可用于研究跑步特征对跖骨应力的影响。本研究旨在使用一种新颖的特定于参与者的有限元模型（包括准确的跖骨和软组织几何形状）来比较习惯性后足前锋和非后足前锋在赤脚跑步期间的第二跖骨应力。收集了 20 名参与者（12 名后足前锋）赤脚地上跑步期间的同步力和运动学数据。使用先前评估和发布的 3D 有限元模型计算应力。非后足前锋比后足跑步者表现出更大的外部负载和关节接触力，但组间的压力没有差异。此外，该研究还可以对骨骼几何形状和应力进行定性评估。骨体积和应力之间没有发现相关性，但是发现跖骨形状存在很大差异，这可能是应力缺乏差异的原因。这强调了骨骼几何形状在估计骨骼应力时的重要性，并支持了不应假设外力代表内部载荷的建议。
Stress fracture of the second metatarsal is a common and problematic injury for runners. The choice of foot strike pattern is known to affect external kinetics and kinematics but its effect on internal loading of the metatarsals is not well understood. Models of various complexities can be used to investigate the effects of running characteristics on metatarsal stresses. This study aimed to compare second metatarsal stress between habitual rearfoot and non-rearfoot strikers during barefoot running, using a novel participant-specific finite element model, including accurate metatarsal and soft tissue geometry. Synchronised force and kinematic data were collected during barefoot overground running from 20 participants (12 rearfoot strikers). Stresses were calculated using a previously evaluated and published 3D finite element model. Non-rearfoot strikers demonstrated greater external loading and joint contact forces than rearfoot runners, but there were no differences in stresses between groups. Additionally, the study allowed for a qualitative assessment of bone geometries and stresses. No correlation was found between bone volume and stresses, however, there was found to be a large variation in metatarsal shapes, possibly accounting for the lack of difference in stresses. This emphasises the importance of bone geometry when estimating bone stress and supports the suggestion that external forces should not be assumed to be representative of internal loading.
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结合特定主题的几何形状来比较跑步过程中不同足部着地模式的跖骨应力。
影响因子：
2.4
作者：
Ellison MA
通讯作者：
Ellison MA
影响因子：
4
作者：
Colin R. Firminger;W. Edwards
通讯作者：
Colin R. Firminger;W. Edwards
估计的第三跖骨弯曲应力非常容易受到骨骼几何形状变化的影响
影响因子：
3
作者：
Michael Nunns;V. Stiles;J. Fulford;S. Dixon
通讯作者：
S. Dixon
有限元预测人体跖骨骨应变的实验验证。
影响因子：
2.4
作者：
Anita Fung;L. L. Loundagin;W. B. Edwards
通讯作者：
W. B. Edwards
影响因子：
1.8
作者：
Firminger, Colin R.;Fung, Anita;Edwards, W. Brent
通讯作者：
Edwards, W. Brent