摘要
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。
The site and size of tibia-talus weight-bearing area and the distribution of tibia-talus joint contact stress at defferent degrees of plautat flexion of ankle joint were studied in a male cadaver by photoelastic stress analysis.The results showed that when the plautar flexion was at 7°,the contact stress distribution area was greatest,the pressure stress was least,and the distribution was even;when the plautar flexion was over 19°,the contact stress distribution area began to decrease and the pressure stress was increased;and when the plautar flexion was over 43°,the contact stress distribution area and the pressure stress were decreased significantly.It is suggested that when one wears high heel shoes,the best flexion angle is 0°～19°,but if the flexion exceeds 43°,the ankle joint tends to suffer fatigue injury.
出处
《武警医学》
CAS
1997年第1期4-7,共4页
Medical Journal of the Chinese People's Armed Police Force
关键词
踝关节
跖屈
光弹性应力
实验
Ankle joint Plautar flexion Photoelastic stress
