Why do we hear a sound when we crack our knucles?
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Escaping gases: Scientists explain that synovial fluid present in your joints acts as a lubricant. ... When you pop or cracka joint, you stretch the joint capsule. Gasis rapidly released, which forms bubbles. In order to crack the same knuckle again,you have to wait until the gases return to the synovial fluid.
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Why do we hear a sound when we crack our knucles?
=> Due to presence of nitrogen inside it.
When we crack our knucles nitrogen bubble break & we hear the sound.
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