Viscosupplementation efficacy is similar in single vs multi-week formulations but higher in younger patients and milder radiographic disease. (April 2017) - Chen, S.X.; Bomfim, F.; Mukherjee, T.; Wilder, E.; Leyton-Mange, A.; Aharon, S.; Browne, L.; Toth, K.; Strauss, E.; Samuels, J.