Rheumatoid arthritis is a chronic, degenerative disease that causes inflammation in the joints. The areas most affected by this type of rheumatism are the wrists, fingers and toes, elbows, shoulders, hips, knees and ankles. The inflammation of the joint causes pain, deformity, and difficulty moving, as the cartilage wears away and the separated bones rub against each other. The cause of this disease is unknown and currently has no possible cure. The damage to bone and cartilage is irreparable, so the treatment of this condition seeks to relieve the pain and disability of patients, in addition to preventing permanent damage from occuring in the affected joints.