Trainer Q&A: Why Does My Knee Crack and Pop?

Trainer Q&A: Why Does My Knee Crack and Pop?: "A: Popping and cracking sounds are common with movements that involve bending or twisting. Concern is only when the popping and cracking sounds occur with pain. Your bones are covered with cartilage that allows them to move smoothly against each other. Training and being active over the years can create incongruencies in the cartilage leading to irregular gliding of your bones, creating this crepitus sound. "



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