When I was still running daily, living up north, I was scared like hell to run when it is slippery. Because a fall on those hard cold surfaces could hurt the legs in a way that it wold be difficult to move, and it might have taken hours, before somebody would have found me.
My running days are over (knees and back don't like running anymore), but even with walking, I make sure that I have the cell with me all the times! One can do nasty falls even when only walking!
Natalie,Ii hope your knee gets better very soon!
If we would move together, one of us would be limping, and the other would have the legs so far apart that one could get the impression she did sh*** into her pants!