I am age 16 and I am, or was a runner. About 1 year ago I was just starting running cross country, just running 1 and a half mile races. I thought that was far but it wasn't. So I got second place overall. I started running 3 miles than 6 miles about 3 months after cross country. Then I started growing and my knee problem was overuse and knock knees. Even my ankle started hurting...