This popping or grinding that you hear is called crepidus. Generally, this is caused by cartilage, a tissue that lines the joints, surfaces rubbing together or may even be due to tendon movement over bony surfaces. If pain is associated with these noises, you should consult a medical professional.
(This answer provided for NATA by Kathryn J. Larko, MPA, ATC, CES.)
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Bone & Joint Conditions
Your bones are your body's framework. It's assembled with bones that are constantly rebuilding and joints that allow you to move. It's an intricate system affected by your metabolism, nutrition, medications, wear-and-tear and medi...
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