摘要
目的：探讨不同角度制动对跟腱力学特性的影响。方法：分别将兔踝关节于伸直位和背屈９０°位制动４周，然后对跟腱本构方程、应力－应变关系等进行对照研究。结果：正常组与二制动组之间跟腱的应力－应变关系理论曲线均有明显不同，其材料常数亦有显著差异；而在二个制动组之间却并不显著。结论：“静止应力”并不能延缓制动所致的组织退变。
The aim of this study is to evaluate the effect of immobilization at different angles on the mechanical properties of rabbit Achilles tendon. The left hindlegs were immobilized with knee in extension, ankle either in extension or plantar flexion 90°. After 4 weeks, the exponential functions, stress-strain curves of Achilles tendon were compared between different groups. The results showed that compared with normal group, the stress-strain curves and material constants of Achilles,tendon were different significantly in either immobilized-I group or immobilized-Ⅱ group, but there were no significant difference between these two immobilized groups. From these findings, we concluded that static stress could not prevent the changes of mechanical properties of Achilles tendon induced by immobilization.
出处
《医用生物力学》
EI
CAS
CSCD
2000年第4期255-256,F004,共3页
Journal of Medical Biomechanics
关键词
静止应力
跟腱
力学特性
静动角度
static stress
achilles tendon
mechanical property
