What causes the noise when you crack a joint?

  1. Jangaplanet profile image78
    Jangaplanetposted 7 years ago

    What causes the noise when you crack a joint?

  2. duffsmom profile image60
    duffsmomposted 7 years ago

    It is the gases in the synovial fluid in the joint that make the popping noise.

 
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