门诊接诊时经常会听到患者朋友们说自己不知什么时候就会突然出现腿发软。腿发软是患者行走或上下楼梯时,突然出现膝关节无力,有一种想要跪倒的感觉,这种现象有时也会伴随着剧烈的疼痛。股四头肌力量的缺乏是产生腿发软现象的动力学原因,也是可以通过锻炼从而消除的因素。 Outpatient admissions often hear patients and friends say they do not know when they will suddenly appear leg weakness. When the patient is walking or walking up and down the stairs, the knee suddenly appears weak. There is a feeling of wanting to kneel, which can sometimes be accompanied by intense pain. The lack of strength of the quadriceps is a kinetic cause of the phenomenon of soft-leggedness and a factor that can be eliminated by exercise.