Best of luck with your recovery! That means you'll get plenty of time with Yorkie Talk, right?
Never fear, as soon as your knee feels better, your girl will get back into the swing of things. You may need to do some extra cleaning with a special wash to take the smells away from the accident spots, (Simple Solution works great), but you will have her back to potty training again soon! Give yourself time to heal, and I hope you feel better fast!