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A ‘Giving way’ captured during walking by gyroscopes and plantar force sensors
Journal of Biomechanics ( IF 2.4 ) Pub Date : 2021-09-17 , DOI: 10.1016/j.jbiomech.2021.110754
Ryutaro Takeda 1 , Kanako Nakajima 2 , Emi Anzai 3 , Sakae Tanaka 1 , Yuji Ohta 4 , Takumi Matsumoto 1
Affiliation  

‘Giving way’ is a rapid inversion of the rear part of the foot, which does not result in an acute lateral ankle sprain. It is a specific event for patients with chronic ankle instability (CAI). This report described a ‘giving way’ in an 18-year-old female with CAI, which was biomechanically captured during walking on the flat surface. Shoes with unstable heel having a hemisphere rubber on the sole of the heel were used to provoke ‘giving way’. To the authors’ knowledge, this is the first report describing the kinetics of ‘giving way’ during walking. The event of ‘giving way’ was captured by an Inertial Motor Unit located on the dorsum of the foot and an insole-shaped plantar force measurement device. ‘Giving way’ provided distinctive data on both kinds of devices. Gyroscope data showed a rapid increase of inversion/plantarflexion/internal rotation (maximum levels: 204/280/346 degree/s) and following eversion/dorsiflexion/external rotation (maximum levels: 509/798/797 degree/s) of the foot segment at 350 ms − 492 ms after the heel strike. Plantar force data demonstrated the rapid decrease and subsequent recovery of the regional force on the head of 1st metatarsal head, suggesting a rapid inversion followed by the foot’s defensive eversion. Although the maximum angular velocity of the inversion was smaller and the duration of inversion phase of ‘giving way’ was shorter than in previous reports, the characteristics of the following eversion phase of ‘giving way’ were consistent with earlier reports. The eversion must be a more specific phase than the inversion in the kinematics of ‘giving way’.



中文翻译:

陀螺仪和足底力传感器在步行过程中捕获的“让路”

“让位”是脚后部的快速内翻,不会导致急性踝关节外侧扭伤。这是慢性踝关节不稳定 (CAI) 患者的特殊事件。这份报告描述了一名患有 CAI 的 18 岁女性的“让步”,这是在平面上行走时被生物力学捕获的。鞋跟不稳定,鞋跟底部有半球橡胶的鞋子被用来挑起“让步”。据作者所知,这是第一份描述步行过程中“让路”动力学的报告。“让路”事件由位于脚背的惯性运动单元和鞋垫形状的足底力测量装置捕获。“让路”在两种设备上都提供了独特的数据。陀螺仪数据显示脚的内翻/跖屈/内旋(最大水平:204/280/346度/秒)和随后的外翻/背屈/外旋(最大水平:509/798/797度/秒)迅速增加脚跟撞击后 350 毫秒 - 492 毫秒的分段。足底受力数据显示第一跖骨头部区域受力迅速下降并随后恢复,表明快速内翻后足部防御性外翻。虽然与以往报道相比,反转的最大角速度更小,“让路”反转阶段的持续时间更短,但随后的“让路”反转阶段特征与之前的报道一致。外翻必须是比“让路”运动学中的倒转更具体的阶段。204/280/346 度/秒)和以下足部外翻/背屈/外旋(最大水平:509/798/797 度/秒)在足跟撞击后 350 毫秒 - 492 毫秒。足底受力数据显示第一跖骨头部区域受力迅速下降并随后恢复,表明快速内翻后足部防御性外翻。虽然与以往报道相比,反转的最大角速度更小,“让路”反转阶段的持续时间更短,但随后的“让路”反转阶段特征与之前的报道一致。外翻必须是比“让路”运动学中的倒转更具体的阶段。204/280/346 度/秒)和以下足部外翻/背屈/外旋(最大水平:509/798/797 度/秒)在足跟撞击后 350 毫秒 - 492 毫秒。足底受力数据显示第一跖骨头部区域受力迅速下降并随后恢复,表明快速内翻后足部防御性外翻。虽然与以往报道相比,反转的最大角速度更小,“让路”反转阶段的持续时间更短,但随后的“让路”反转阶段特征与之前的报道一致。外翻必须是比“让路”运动学中的倒转更具体的阶段。509/798/797 度/秒)在足跟撞击后 350 毫秒 - 492 毫秒。足底受力数据显示第一跖骨头部区域受力迅速下降并随后恢复,表明快速内翻后足部防御性外翻。虽然与以往报道相比,反转的最大角速度更小,“让路”反转阶段的持续时间更短,但随后的“让路”反转阶段特征与之前的报道一致。外翻必须是比“让路”运动学中的倒转更具体的阶段。509/798/797 度/秒)在足跟撞击后 350 毫秒 - 492 毫秒。足底受力数据显示第一跖骨头部区域受力迅速下降并随后恢复,表明快速内翻后足部防御性外翻。虽然与以往报道相比,反转的最大角速度更小,“让路”反转阶段的持续时间更短,但随后的“让路”反转阶段特征与之前的报道一致。外翻必须是比“让路”运动学中的倒转更具体的阶段。表明脚部的防御性外翻之后是快速内翻。虽然与以往报道相比,反转的最大角速度更小,“让路”反转阶段的持续时间更短,但随后的“让路”反转阶段特征与之前的报道一致。外翻必须是比“让路”运动学中的倒转更具体的阶段。表明脚部的防御性外翻之后是快速内翻。虽然与以往报道相比,反转的最大角速度更小,“让路”反转阶段的持续时间更短,但随后的“让路”反转阶段特征与之前的报道一致。外翻必须是比“让路”运动学中的倒转更具体的阶段。

更新日期:2021-09-23
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