<P> The act of cracking joints means bending a person's joints to produce a distinct cracking or popping sound, often followed by a feeling of satisfaction or relaxation to the person . It is sometimes done as part of a joint adjustment / mobilization routinely performed by a chiropractor, osteopath or physical therapist . </P> <P> According to traditional belief, the popping of joints, especially knuckles, can lead to arthritis and other joint problems . However, medical research has so far failed to conclusively demonstrate a connection between knuckle cracking and long - term joint problems . While the cracking mechanism and the resulting sound is not yet fully understood, it is mainly attributed to nitrogen or carbon dioxide bubbles building up between the joints . </P>

What causes your bones to make a cracking sound
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