Perhaps the most common type of disease is hand OA, as debilitating to the patient as the changes generated by rheumatoid arthritis. On the other hand, among the most debilitating, is knee OA, that greatly diminish the quality of life of the affected patients. (4) At the Knee Surgery Group of Instituto de Ortopedia e Traumatologia do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (IOT-HCFMUSP) - Orthopedics and Trauma Institute of University of São Paulo's General Hospital - there is a large number of young adult patients who were economically active, until the advent of a joint trauma, which led to early OA. There is also a large number of people seeking our group for a Total Knee Arthroplasty (TKA) without been offered all non-surgical alternatives of treatment. As there are also patients who underwent surgical treatment but suffer from consequences of OA and clinical treatment is their current need. These patients do not receive an appropriate OA clinical care.