Replying to My knee fixed.... Miracle ?

Well I screwed my knee up at christmas it practically crippled me for 2 days, then I did some super-light skiing on it, it was pretty painful, but not too bad, it was getting steadily for the last month, i.e. it was hurting when I walked and stuff, until 4 days ago, now its pretty much perfect.... What happened ? is my knee fixed for good and has this happened to anyone else, I'm pretty stoked I've been jumping around just fo the hell of it, and it doesn't hurt...