http://medicaldirectoryonline.com/Bone/Arthritis/Resource for Health & Medical Information Information on Arthritis.http://www.rheumatoidarthritis.comUnderstanding, diagnosing and treating Rheumatoid Arthritis.Tue, 30 Mar 2010 21:49:35 GMThttp://www.enbrel.com/ra/understanding-ra.jsp?channel=GOSEA&subchannel=SRACWith rheumatoid arthritis (RA), the immune system loses its ability to tell the difference between these foreign invaders and the body's normal cells. It begins to attack those normal cells too.Tue, 30 Mar 2010 21:51:31 GMThttp://www.webmd.com/osteoarthritis/guide/osteoarthritis-symptoms-typesThere are over 100 types of arthritis, including osteoarthritis, rheumatoid arthritis, and gout.Tue, 30 Mar 2010 21:55:30 GMT