中国组织工程研究 ›› 2021, Vol. 25 ›› Issue (24): 3838-3843.doi: 10.12307/2021.089

• 骨与关节生物力学 bone and joint biomechanics • 上一篇    下一篇

不同足弓结构负重跨障的稳定性

王新亭1,2,徐聃弟1,2,张峻霞1,2,苏海龙1,2,王  琪1,2   

  1. 1天津科技大学机械工程学院,天津市   300222;2天津市轻工与食品工程机械装备集成设计与在线监控重点实验室,天津市   300222
  • 收稿日期:2020-09-08 修回日期:2020-09-11 接受日期:2020-10-16 出版日期:2021-08-28 发布日期:2021-03-08
  • 作者简介:王新亭,男,1978年生,山东省武城县人,汉族,2004年天津科技大学毕业,硕士,副教授,主要从事人机工程与仿生设计、运动生物力学、康复辅具方面的研究。
  • 基金资助:
    天津市科技支撑计划资助项目(14ZCDSY00010),项目负责人:张峻霞;天津市应用基础与前沿技术研究计划(16JCZDJC35900),项目负责人:苏海龙

Stability of load-bearing cross barrier of different arch structures

Wang Xinting1, 2, Xu Dandi1, 2, Zhang Junxia1, 2, Su Hailong1, 2, Wang Qi1, 2   

  1. 1College of Mechanical Engineering, Tianjin University of Science & Technology, Tianjin 300222, China; 2Tianjin Key Laboratory of Integrated Design and Online Monitoring for Light Industry and Food Engineering Machinery and Equipment, Tianjin 300222, China
  • Received:2020-09-08 Revised:2020-09-11 Accepted:2020-10-16 Online:2021-08-28 Published:2021-03-08
  • About author:Wang Xinting, Master, Associate professor, College of Mechanical Engineering, Tianjin University of Science & Technology, Tianjin 300222, China; Tianjin Key Laboratory of Integrated Design and Online Monitoring for Light Industry and Food Engineering Machinery and Equipment, Tianjin 300222, China
  • Supported by:
    Tianjin Science and Technology Support Program, No. 14ZCDSY00010 (to ZJX); Tianjin Applied Basic and Frontier Technology Research Program, No. 16JCZDJC35900 (to SHL)

摘要:

文题释义:
步态周期:包含摆动相、单支撑相与双支撑相。双支撑相时间延长、摆动相与单支撑相时间缩短有助于提高行走过程中的步态稳定性。
COPX、COPY:是指足底压力中心(center of pressure,COP)在X方向和Y方向的位移距离,可以定量反映足部在X方向与Y方向的位移情况,位移距离越大,表明行走过程中的稳定性越差。

背景:负重跨越障碍物行走在日常生活中较为常见。足弓结构的改变容易引起足部疾病的发生,从而影响行走的步态特征。
目的:分析正常足、高足弓、扁平足负重跨障过程中时-空步态参数、动力学参数的变化,探究足弓结构对人体步态稳定性的影响。
方法:30名在校健康男性大学生按照足弓形态分为3组,每组10例。正常足组年龄(25.2±0.87)岁,身高(175.73±5.54) cm;扁平足组年龄(25.57±1.29)岁,身高(175.29±5.55) cm;高足弓组年龄(25.1±0.94)岁,身高(174.7±5.61) cm。使用VICON三维运动捕捉系统和Pedar-X鞋垫足底压力测量系统采集各组受试者以日常行走步速在不同负重质量下跨越障碍物时的时-空步态参数、动力学参数,分析在不同负重质量下步态周期、足底压力中心轨迹的变化情况。
结果与结论:①不同足弓结构在负重跨障时的足底压力中心位移差异显著,高足弓与扁平足足底压力中心在X、Y轴方向的位移均大于正常足;相比于正常足与高足弓,扁平足在双支撑相占步态周期比例更长,单支撑相占步态周期比例更短。②结果提示,足弓结构对于负重跨障过程中的稳定性有显著影响;相比于正常足,高足弓与扁平足的步态稳定性更低,高足弓需要更多的内侧支撑,扁平足需要更多的外侧支撑来提高步态稳定性;该研究结论可为扁平足和高足弓的矫形康复鞋垫设计提供一定的参考依据。
https://orcid.org/0000-0003-0546-6865 (王新亭) 

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱;骨折;内固定;数字化骨科;组织工程

关键词: 足弓结构, 跨越障碍物, 足底压力中心, 步态周期, 稳定性, 步态分析

Abstract: BACKGROUND: Walking across obstacles with weight is more common in daily life. Changes in the structure of the arch of the foot can easily cause foot diseases, thereby affecting the gait characteristics of walking.
OBJECTIVE: To study the changes of spatial and temporal gait parameters and kinetic parameters during normal foot, high arch, flat foot and load-bearing stride, and to explore the influence of arch structure on gait stability. 
METHODS: Thirty healthy male college students at school were divided into three groups according to the shape of the foot arches (n=10 per group). The 10 cases in the normal foot group were at the age of (25.2±0.87) years old and height of (175.73±5.54) cm. The 10 cases in the flat foot group were at the age of (25.57±1.29) years old and height of (175.29±5.55) cm. The 10 cases in the high foot arch group were at the age of (25.1±0.94) years old and height of (174.7±5.61) cm. The VICON three-dimensional motion capture system and Pedar-X insole plantar pressure measurement system were used to collect spatial and temporal gait parameters, and dynamic parameters. The changes of parameters such as the gait cycle and the center of pressure trajectory under different weights were analyzed.
RESULTS AND CONCLUSION: (1) Differences in center of pressure displacements of different arch structures during weight-bearing cross-obstacle. The displacements of plantar pressure center in X and Y axes of the high arch and flat foot were larger than those of the normal foot. Compared with the normal foot and the high arch, the flat foot had a longer proportion of the gait cycle in the dual support phase, and the single support phase had a shorter proportion in the gait cycle. (2) To conclude, the arch structure has a significant effect on the stability during weight-bearing trans-obstacle. Compared with normal feet, the gait stability of the high arch and the flat foot is lower; the high arch requires more medial support; and the flat foot requires more lateral support to improve gait stability. The conclusion of this study provides a certain reference for the design of orthopedic rehabilitation insoles with flat feet and high arches.

Key words: foot arch structure, crossing obstacles, center of plantar pressure, gait cycle,  , stability, gait analysis

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