Joint noise: As a 21 year old , your should not worry about the noise in the knees if pain is not associated. I would seek a formal complete knee XR series ordered by your physician to establish the fact the knees are truly normal on radiographs & on physical examination.
Answered 8/21/2015
3.3k views
No: Crackling sound on bending a joint is harmless.
Answered 1/16/2015
3.3k views
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