I recently got back into skiing a few years ago. Yesterday I had an episode where my skiis when into a "V" and I did a spread eagle face plant. My left binding released, due to my left foot being rotated counter-clockwise. My knee hurt slightly right after I did it, but I skiied the rest of the day and totally forgot about it. About 4 hours later I noticed it being slightly stiff after sitting on a lift.
Now (about 24 hours after the event) it hurts when I do certain things. Most notably, when I get up from a "deeply seated" position I can't put much weight on it. As I get it straightened out it seems to be able to bear a normal amount of weight. I can't see any swelling whatsoever.
I'm a runner (sorry, folks, but I love running more than skiing - and I like skiing A LOT) and I just got back from 2 year episode of injuries - none of them associated with either of my knees. So I'm freaking out I did something to my knee. I'm thinking (hoping) I didn't do anything to the mensicus, etc. since there isn't any swelling, and that I just strained some tendons or ligaments.