Plaquenil, a drug that has been shown to help ease rheumatoid arthritis pain, failed to help people suffering from osteoarthritis, the most common form of arthritic joint pain.
Arthritis is inflammation of one or more of your joints. The most common types are osteoarthritis and rheumatoid arthritis. Osteoarthritis affects structures throughout the joint. The cartilage, the slippery tissue that covers the ends of bones in a joint, begins to break down and wear away. This allows bones to rub together, eventually causing inflammation and pain. READ MORE ABOUT OSTEOARTHRITIS.