Population based study of smoking cessation & risk of TKR in knee OA. TKR higher in recent quitters (26.7/1000PY vs 17.4/1000PY in smokers). adjusted HR=1.30 (95%CI:1.05-1.59). TKR risk was higher among quitters with weight gain (HR=1.42) https://t.co/6onQWQeFcI