简介:Osteoarthritis(OA)isthemostcommonformofarthritis.ThekneeandhipjointsarethemostcommonsitesforOA,andkneeOAismoreprevalentthanhipOA.1KneeOApatientsoftensufferpain,functionaldisability,articularcartilagewearandrelatedjointspacenarrowing.AmongU.S.adults,46.4millionhavephysician-diagnosedarthritisrepresenting