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 ...

If you have severe arthritis pain, your doctor may suggest that you have joint fusion surgery (also called “arthrodesis”). This procedure fuses, or “welds,” together the two bones that ...

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 ...