70 #gout pts studied & 44.3% developed post-surgical flares. Risk factors included Presurgical sUA ≥ 9 mg/dL (OR 3.77) & sUA changes before and after surgery (OR 1.62); but \allopurinol reduced risk (OR 0.15). Mean time to flare=3.7 days. Knee > MTP1 https://t.co/U6rl5c8Cf3