Baker's cyst: A baker's cyst is a buildup ofsynovial (joint) fluidbehind the knee.5It can cause knee swelling, instability, clicking or popping noise with bending, joint stiffness, and limited range of motion. Bone cancer:Osteosarcoma, a type of bone cancer, often affects the knee.6 Tra...
Knee crepitus or knee noise in the form of snapping, crackling, clicking, or popping is commonplace. Sometimes, it is caused by the benign catching of soft tissues. In other cases, the sounds may indicate more serious damage to the bearing surface of the joint: the articular cartilage. ...
Based on subjects' suggestions, this item was thus revised as “do you feel grinding/friction, hear clicking/cracking or any other noise when your knee moves?”. The third item in the same domain: “does your knee catch or hang up when moving?” was not clearly understood by all five ...