copperjoint.com

Why do knee noises sound frightening? Is there something wrong with it? Answering these questions is best done with an understanding of the mechanisms inside the joint. In a joint, the bones that form the moving parts (upper leg and lower leg, in the case of the knee) meet at a juncture where the ends of the bones are cushioned with a resilient tissue material called cartilage, which keeps the bones from rubbing against each other and causing painful friction.