Co-Author(s): Pippa Elliott, MRCVS The Mayo-Robson sign (also known as the "kick the leg" sign) is a symptom that occurs in a patient with rheumatoid arthritis. It is believed that this symptom is one of the most informative in determining the diagnosis of rheumatoid arthritis. It is also used to assess pain and possible limb dysfunction in patients. The most common problems associated with the Mayo-Robson sign