I'm only 16 years old and have had right knee paint for about four years. In 6th grade I fell on it wrong and was on crutches for about a week and went through physical therapy but nothing has helped. The pain and swelling flairs up more in the winter time and when I try to get involved in sports or working out. I've had MRIs but they don't seem to find anything or just might not care enough. I've not grown since 6th grade so I don't think it has anything to do with that. I'm getting really tired of the pain help!