摘要
该实验是采用光弹性应力分析法，分析踝关节在不同跖屈位置时，胫骨－距骨负重区的位置，大小以及胫距关节接触应力的分布状况。实验结果表明，踝关节在跖屈7°时，接触应力分布面积最大，压应力最小，且分布均匀；在跖屈大于19°时，接触应力分布面积开始减少，压应力增大；在跖屈大于43°时，接触应力分布面积明显减少，压应力明显增大、从中揭示，从应力观点看，踝关节在跖屈0°～19°时，为最佳负重角度范围；跖屈大于43°时，踝关节应力集中，易发生疲劳性损伤。
This experiment is using a method of photoelastic stress analysis to analyse tibia- astragalusload bearing region, size and tibia - astragalus joint contact stress distribution situation when theankle joint at different nexangle. The results show: when the flex angle is at 7° the contact streedistiribution is largest and the press stress is the smallest with even disribution if the angle enlangto over 19°, the contact stress distribution area will be decreased and press stress will be increased.When the flex angle is over 43°, the contest stress distribution area will be decreasd significantlywhile the press stress will be increased. Basing on these propositionwe we understand, in view ofstress, when one wears high heel shoes, the best flex angle is 0°~19°, If the flex is over 43°,theankle joint tends to get tatigue injury.
出处
《医用生物力学》
EI
CAS
CSCD
1998年第4期200-203,214,共5页
Journal of Medical Biomechanics
