Than you all again for the well-wishes, kudos, and advice. My ride picked me up and we went to Costco so I could get some more chocolate protein shake. I walked the store with a shopping cart, sometimes walking upright, sometimes leaning on the cart with my elbows, and I can take several steps not holding anything.
I got home around 1:00, put things away, laid down on the sofa, kitty laid down on me, and we took naps. I woke up around 3:30 when a friend called, and I took my first dosage of Tramadol since getting home. Walking around the house is okay. The knee doesn't really hurt, but the front of my thigh is hard, warm, and sore.