@carolasc : Carol: I already posted some experiences with my TKR, but to be specific;
Yes, you can go up and down stairs, with or without carrying stuff. Initially holding onto railing, later without.
Absolutely. You can get off the floor the day of surgery. Just flip onto your stomach, and go from there. Later on you can do it most anyway you want.
I don’t do yoga, but I go for 2 mile walks 5 days/week. I do sometimes bike stationary ones, but there’s no reaon not to ride actual ones. Hikes: you’re supposed not to do steep downhills. Uphills - no limitations.
Travel - yup. As mentioned before, 4 months after TKR, full size suitcase, by myself, in Austria, snowy conditions, in and out of trains.
Yard: oh yes. After 7 days I was inspecting my veggie bed, and have been roaming up and down my backyard over sticks and stones and bumps and dips almost every day.
Limitiations: as per surgeons’s instruction.
Oh: I forgot: to kneel - yes, you can. Won’t feel good, but with some padding ok. Except not “useful” kneeling, as I would put it - as in pulling weeds where your weight is centered over and in front of your knee. That won’t work, I’m afraid.