I've had that happen to me - though from playing basketball rather than skiing.
You HAVE TO PROTECT THAT KNEE! If there's no pain, it means you probably didn't do any serious injury to it - though it may be worth a checkup just in case.
For your knee's sake, wrap it, brace it, or use a support to ensure that you don't injure it worse. ACE bandages are pretty useful in this case, though you may want to use a knee brace. Stay away from sports until you feel it's stable again.
10/17/2006 02:43 PM
today I twisted my foot playing tennis and fell on the outside of my right knee. I felt it kind of pop and move sideways. I don't have any real pain in it but it has no stability when I move side to side but walking it just feels tender. Any ideas?? I know I didn't tear anything because that hurts like hell and this is just a slight tender feeling but the lack of stabilty is scaring me.