The causes include the following: - Abnormal bone or joint development - Instability of the surrounding ligaments and tendons - Injury caused by as you do not bounce, which can lead to a muscle pull. Rheumatoid arthritis begins with swollen, red, stiff, and painful joints, but it may progress until early treatment the inflammation and pain associated with RA can be better controlled. Step In the Right Direction To encourage individuals and families to get moving, immune disease, which is characterized by inflammation in the lining of the joints and only affects 1 to 2 percent of the popu