TopicBasic ScienceUpdatedâĢDefinition of osteoarthritis?âĢWhat is the pathogenesis of OA?âĢCauses?âĢMacroscopic Changes?âĢMicroscopic changes? What components?âĢWhat are key difference from normal aging?âĢWhat is the key distinguishing factors between OA and Aging?âĢWhat are AGEs?âĢWhat is the pathogenesis of Rheumatoid Arthritis?