Walking to the car yesterday, I stepped wrong, heard a loud pop, and...my left knee hurt so bad I wanted to throw up. Had to go to Target, though, so I struggled through, came home, and crashed on the couch. It felt better this afternoon, so Miss KT and I got on with our errands, and I was fine...until I got out of the car. One step, and pop...crunch...and I nearly fell over. It's been several hours, and I can't straighten my leg out. I can barely walk, and I've had to pull the cane out just to get around the house. It feels almost like the muscle behind my knee has shortened, and my lower leg is tingling and numb. I've had ice on it, and that makes it feel better, but even shifting position on the couch hurts. Any idea on what I might have damaged? I know I only have scraps of meniscus left; the ortho refused to operate again. I really don't want to head down the road of knee replacement.