习武,容易发生髌骨劳损,因为练武的步型、步法,大多是在膝关节处于半蹲位置上完成的,所以,运动中股四头肌绷得最紧,使髌骨和股骨间的接触面不断增大,以致增大挤压与摩动。有些运动员在练习上采取“单打一”方法,使膝关节在连续疲劳下反复半蹲变换步型。例如一节课就练习一百多次,甚至更多,中途又没有其他上肢运动交替进行,造成膝关 Xiwu, prone to patellar strain, because martial arts step, footwork, mostly in the knee in the squat position to complete, so exercise quadriceps stretched the most tight, so that the contact between the patella and femur Increasing surface, resulting in increased extrusion and friction. Some athletes in the practice to take “single one ” method, so that the knee repeatedly fatigue squat change step type. For example, a lesson to practice more than 100 times, or even more, midway there is no other upper limb alternation, resulting in knee