Rheumatoid Arthritis is an autoimmune disease that targets synovial tissues, cartilage and bone (Smolen & Keystone, 2012). In an autoimmune disease, the immune system mistakes the body's own cells for invaders and attacks healthy cells and organs instead of pathogens (Spriggs, 2014). The two long bones of the forearm, the radius and the ulna, are connected through the radioulnar joint, a joint that is divided into a proximal and a distal half (Savvidou, Murphy, Mailhot, Shushan, Scheker, 2013). The distal half is the joint that articulates with the wrist. The DRUJ has a central role in acting against gravity to lift an object (Savvidou, Murphy, Mailhot, Shushan, Scheker, 2013). Therefore, this joint is very important for wrist motions. Rheumatoid
