Ripollés-Melchor, Javier Aldecoa, César Fernández-García, Raquel Varela-Durán, Marina Aracil-Escoda, Norma García-Rodríguez, Daniel Cabezudo-de-la-Muela, Lucia Hormaechea-Bolado, Lucía Nacarino-Alcorta, Beatriz Hoffmann, Rolf Lorente, Juan V. Ramírez-Rodríguez, José M. Abad-Motos, Ane Early mobilization after total hip or knee arthroplasty: a substudy of the POWER.2 study 10.1016/j.bjane.2021.05.008 2021 2021