Disease burden and costs for patients with hip and knee osteoarthritis and chronic moderate-to-severe refractory pain on treatment with strong opioids in Spain Antoni Sicras-Mainar; Javier Rejas-Gutierrez; Francisco Vargas-Negrín; Juan Carlos Tornero-Tornero; Aram Sicras-Navarro; Isabel Lizarraga;

Controversy about the use and financing of SYSADOA for osteoarthritis in Spain: An analysis of the scientific-social debate in the media Pedro Alfonso Domínguez Vera; Luis Carrasco Páez;

An update on the study of synovial fluid in the geriatric patient Javier Fernández-Torres; Víctor Ilizaliturri-Sánchez; Karina Martínez-Flores; Carlos Alberto Lozada-Pérez; Rolando Espinosa-Morales; Yessica Zamudio-Cuevas;