ZHU Ting,MA Xia,ZHAI Hua,ZHONG Rongzhou,TIAN Fei,LI Ningwei,WANG Shaobai.Dynamic Plantar Pressure Features of Ankle Joints at Different Stress Positions[J].Journal of medical biomechanics,2020,35(4):342-348
踝关节不同应力位的动态足底压力特征
Dynamic Plantar Pressure Features of Ankle Joints at Different Stress Positions
Received:May 13, 2019  Revised:June 24, 2019
DOI:
Chinese key words:  足底压力  踝关节内翻  踝关节外翻  应力位
English Key words:plantar pressure  ankle inversion  ankle eversion  stress position
Fund project:上海市残疾人康复科研项目(K2018024),科技部重点研发计划(2018YFF0300504),国家自然科学基金项目(81702211),上海市进一步加快中医药事业发展三年行动计划2018~2020年(ZY(2018-2020)-FWTX-8016)
Author NameAffiliation
ZHU Ting School of Kinesiology, Shanghai University of SportYangzhi Rehabilitation Hospital Tongji University (Shanghai Sunshine Rehabilitation Center) 
MA Xia Department of Rehabilitation Science, Tongji University School of Medicine 
ZHAI Hua Yangzhi Rehabilitation Hospital Tongji University (Shanghai Sunshine Rehabilitation Center) 
ZHONG Rongzhou Yangzhi Rehabilitation Hospital Tongji University (Shanghai Sunshine Rehabilitation Center) 
TIAN Fei School of Kinesiology, Shanghai University of Sport 
LI Ningwei School of Kinesiology, Shanghai University of Sport 
WANG Shaobai School of Kinesiology, Shanghai University of Sport 
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Chinese abstract:
      目的 探究踝关节不同侧肢体和应力位的足底压力分布特点。方法 23名健康受试者通过简易定制走道和足底压力测试平板进行踝中立位、踝内翻、踝外翻的足底压力测试,测试指标为峰值压强、接触面积、接触时间百分比、足底内侧峰值压强之和与外侧峰值压强之和的比值(M/L)、足趾峰值压强之和与足跟峰值压强的比值(A/P)。结果 优势腿在第1跖骨的峰值压强明显大于非优势侧,第5跖骨峰值压强明显小于非优势侧。优势侧M/L显著大于非优势侧。除中足、第1趾,其余区域3种应力位的峰值压强存在显著性差异。内翻时各区域的接触时间百分比均大于中立时,外翻时除第2趾其余区域的接触时间百分比大于中立时。内翻、中立、外翻M/L分别为1.24±0.46、1.06±0.26、0.88±0.25;内翻时优势侧M/L大于非优势侧;内、外翻时A/P均大于中立。结论 优势侧踝关节稳定性优于非优势侧。踝关节内翻、外翻时稳定性有所下降。内翻时身体往前、内侧偏移,外翻时则往前、外侧偏移以维持稳定。
English abstract:
      Objective To explore the characteristics of plantar pressure of ankle joints at different limb laterality and different stress positions. Methods Twenty-three healthy subjects were recruited to perform walking trails. Each subject was tested for plantar pressure in ankle neutral position, ankle inversion and ankle eversion through simple custom-designed walkways and plantar pressure plate. The evaluation indices were peak pressure, contact area, contact time percentage, M/L (ratio of sum of medial plantar peak pressure to sum of lateral peak pressure), A/P (ratio of sum of toe peak pressure to heel peak pressure). Results The peak pressure of the first metatarsus bone in the dominant foot was significantly larger than that in the non-dominant foot, and the peak pressure of the fifth metatarsus bone was significantly smaller than that on the non-dominant foot. The M/L of dominant side was significantly larger than that of the non-dominant side. Except for the peak pressures of the mid-foot and the first toe, there were significant differences in other regions among the three ankle positions. The percentage of contact time in each area during inversion was greater than that in neutral position, and the percentage of contact time of plantar regions during eversion was longer than that in neutral position except the second toe. The M/L in inversion, neutral and eversion position were 1.24±0.46, 1.06±0.26, 0.88±0.25. The M/L of dominant foot was greater than that of the non-dominant foot, and the A/P during inversion and eversion was greater than that in neutral positions. Conclusions The stability of the dominant foot was better than that of the non-dominant foot. The standing stability decreased during inversion and eversion. During inversion, the body shifted inward and forward to maintain the stability. During eversion, the center of gravity shifted outward and forward to maintain the stability.
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