Rheumatoid arthritis (RA) is a chronic autoimmune disease that primarily affects the joints. In RA, the immune system ...

Joints form where one bone connects to another bone, allowing the skeleton to move. While there are several different types of joints that differ in structure and the way they move, hinge joints ...

It is normal to experience crepitus, or cracking and popping joints (where two bones meet). Common causes of cracking joints include gas escaping and tight tendons or joints. Arthritis and ...

Deteriorated or “spalled” joints are the number one problem in a concrete floor. Saw cut contraction/control joints and ...