IV zoledronic acid (ZA) of PBO was given to 222 pts with symptomatic knee osteoarthritis (without severe joint space narrowing) and after 7 yrs of F/U, ZA had no effect on Knee OA progression w/ similar TKR Rates (39% vs 30%) https://t.co/P09EvRmApO https://t.co/s5fL1unM45