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在关节活动时,有时会发生“喀啦、喀啦”的碎裂声。为啥会出现这种现象呢?一般来说,关节在活动时是不可能产生碎裂声的。因为每个可动关节的主要结构有关节面、关节囊和关节腔。形成关节的两个关节面,多为一凸一凹,其表面复盖着一层软骨。软骨使相连的关节面光滑、减少摩擦。软骨富有弹性,在运动时又可减轻两关节面的震动和冲击。关节囊封闭着两个相邻关节面之间的腔
In the joint activities, sometimes “pull the door, pull back,” the crackle. Why does this happen? Generally, it is impossible for a joint to break apart when it is active. Because of the main structure of each movable joint articular surface, joint capsule and joint cavity. The two articular surfaces that form the joint are mostly convex and concave with a layer of cartilage covered on the surface. Cartilage connected to the articular surface smooth, reduce friction. Cartilage is flexible, and can reduce the vibration and impact of the two articular surfaces during exercise. The joint capsule encloses the cavity between two adjacent articular surfaces