The biggest snag I run into when I tell people that I have rheumatoid arthritis is that people often don't know what that is. Usually, the response is something like, "So? My grandma has that." Now, obviously it's possible that grandmas have rheumatoid arthritis. I know quite a few who do. But this is usually said with the implication that everyone gets rheumatoid arthritis as they get older, which isn't true. Instead, quite a few people get osteoarthritis as they age. So let's figure this out and talk about osteoarthritis vs rheumatoid arthritis.