Over a month ago, after a day of skiing, I noticed that my left knee started to crunch/pop/click when I would extend it. It is still making these noises, and it makes extending my leg very uncomfortable. However, there is no pain, no swelling, and no instability. I have been skiing like normal. I am going to see a doctor when I get back to the land of freeish healthcare (Canada), but has anybody experienced something like this?