What is rheumatoid arthritis (RA)? Rheumatoid arthritis, or RA, is an autoimmune and inflammatory disease, which means that your immune system attacks healthy cells in your body by mistake, causing inflammation [...]

Osteoarthritis (os-tee-o-arth-ri-tus) is the most common form of arthritis, and the knee is one of the most commonly affected joints. Everyone’s joints go through a normal cycle of damage and repair during their [...]