Insurance data (biologics only given to refractory pts) study of 249 (TKR) & 159 (THR) surgeries in ~6000 #RA pts. Pts on biologics had signif less TKR (aHR: 0.55) & THR (0.63) vs higher rates if on MTX, steroids, biologic switch or APL syndr https://t.co/4rwuYswqz7