Have any of your kids had knee problems? My girl is 3.5, and she complains about knee pain pretty often. She also runs and plays more often than not, so I've just figured she is having growing pains. But truth be told, I don't know anything about growing pains and she was crying the other night and wouldn't walk. Crying last night about it too. So I am taking her to the doctor tomorrow morning. Do any of you have experience with this? Her knee looks fine to me, and she seems fine most of the time. So I can't imagine what I need to ask for tomorrow. My uncle had osgood-schlatter as a kid, so I will ask about that. Anything else you girl know about, I would love if you can share.