Why Do Joints Pop And Crack?
SciShow explains what really causes those popping sounds your joints make -- fluid dynamics, people! -- and what you should watch out for if you're a habitual ...
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Are you ready? [cracks knuckles] Ah I've been cracking my knuckles since I can remember. And I do it so often that I've been called "crunchy" I've gotten so good at it that I can pop almost every joint in my body. But like, why do they do that? 'Cause even though it feels awesome It does sound rather alarming. Well, a joint is just where two bones in your body come together. But they don't actually touch. Because if they did the friction would grind them into a bone powder Which I think most people would find unpleasant. So instead your bones are capped by cushions or articular cartilage Which are kept lubricated by thick, clear, mucus-y stuff called synovial fluid. And that fluid is produced by the synovial membrane, which surrounds the entire joint. W...
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Are you ready? [cracks knuckles] Ah I've been cracking my knuckles since I can remember. And I do it so often that I've been called "crunchy" I've gotten so good at it that I can pop almost every joint in my body. But like, why do they do that? 'Cause even though it feels awesome It does sound rather alarming. Well, a joint is just where two bones in your body come together. But they don't actually touch. Because if they did the friction would grind them into a bone powder Which I think most people would find unpleasant. So instead your bones are capped by cushions or articular cartilage Which are kept lubricated by thick, clear, mucus-y stuff called synovial fluid. And that fluid is produced by the synovial membrane, which surrounds the entire joint. W...
