Short- and Mid-Term Outcomes of Fixed-Dose Tramadol/Paracetamol in Early-Stage Symptomatic Knee Osteoarthritis: A Single-Center Retrospective Observational Extension Study. - Cipolloni, Valerio; Bonifacio, Marco; Musorrofiti, Marco Giuseppe; Saggini, Raoul; Caldarola, Alessia; Grossi, Gilberto; Piazza, Roberto; Mangrella, Mario; Trastulli, Deborah; Conforti, Alessandro (Life (2075-1729), 2026)