SLE (n=2428) pts followed for 224,295 Pt-months- Osteonecrosis seen in 122 pts (6.5/1,000 PtYrs). Higher ON risk - African Americans (2x), Male (1.8x), smokers (1.5x). Higher Rates w/ high dose prednisone (not pulse or IM TCA) https://t.co/omU9Z1Z3kU https://t.co/wceGoCcUBV