Cracking and popping joints, medically known as crepitus, are normal. Joints are points in your body where two bones meet. You might occasionally hear your knees popping or notice your back or bones crack as you move them. Joints that crack and pop are not typically a sign you need to see a healthcare provider. You’ll want to see a healthcare provider, in contrast, if you have pain or swelling with crepitus.1 Read on to learn why your joints crack or pop and how to treat them.
Source: health