Incorporating subject-specific geometry to compare metatarsal stress during running with different foot strike patterns.
Incorporating subject-specific geometry to compare metatarsal stress during running with different foot strike patterns.
复制标题
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。
DOI：
10.1016/j.jbiomech.2020.109792
复制
发表时间：
2020
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的问题。已知足部撞击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。第二跖骨的受试者特定模型可用于以非侵入性方式研究内部负荷。本研究旨在比较赤脚跑步时习惯性后脚和非后脚前锋之间的第二跖骨应力，使用一种新的特定于受试者的数学模型，包括精确的跖骨几何形状。同步的力量和运动学数据收集在赤脚地上运行从20名参与者（12后脚罢工者）。使用特定于受试者的梁理论模型计算了跖骨干中部的足底和背侧周边的应力。非后足罢工者表现出更大的外部负荷，弯矩和压缩力比后足罢工者，但没有组之间的峰值应力的差异。统计参数分析显示，非后足罢工者有更大的第二跖骨应力在早期的立场，但没有差异的峰值应力。这强调了骨几何形状在估计骨应力时的重要性，并支持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. Subject-specific models of the second metatarsal can be used to investigate internal loading in a non-invasive manner. This study aimed to compare second metatarsal stress between habitual rearfoot and non-rearfoot strikers during barefoot running, using a novel subject-specific mathematical model, including accurate metatarsal geometry. Synchronised force and kinematic data were collected during barefoot overground running from 20 participants (12 rearfoot strikers). Stresses were calculated at the plantar and dorsal periphery of the midshaft of the metatarsal using a subject-specific beam theory model. Non-rearfoot strikers demonstrated greater external loading, bending moments and compressive forces than rearfoot strikers, but there were no differences in peak stresses between groups. Statistical parametric analysis revealed that non-rearfoot strikers had greater second metatarsal stresses during early stance but that there was no difference in peak 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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第二跖骨应力性骨折
DOI：
10.53347/rid-56595
发表时间：
2017
期刊：
Radiopaedia.org
影响因子：
--
作者：
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通讯作者：
Varun Babu
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影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
Colin R. Firminger;W. Edwards
影响因子：
2.4
作者：
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通讯作者：
Dixon, Sharon
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影响因子：
3
作者：
Michael Nunns;V. Stiles;J. Fulford;S. Dixon
通讯作者：
S. Dixon