Hi, I hope all of my BoneSmart friends are having a good day.
I haven't posted an update in a while, so here goes: I am currently 7 months post RTKR/19 months post LTKR. I am doing fine, energy levels back to normal. My new knee doesn't really bother me much anymore at work, though if I stand too long I feel the need to elevate and bend it. Since I work nights in an ICU, it's okay to stand around with one leg up like Captain Morgan (arrrgh, matey!). Not very professional, perhaps, but no one has complained.
I hike, bike, and go to the gym a couple times a week. I use the gym's very smooth new ellipical machine for >30 minutes at a time, no problem. I can ascend and descend stairs carefully without holding on. I can't run up and down, though- it's like I don't have any more of those fast-twitch muscle fibers needed for rapid movements?? Maybe I can recruit some with special training, maybe it's too soon, or maybe it's too late, I don't know.

Some days I still get a little "start up stiffness" from the new knee, but that's gradually fading away. Sometimes I wish I had more bend. It would be nice, for example, to crouch all the way down on my haunches or sit on the floor cross-legged, but that's not happening so far. I will keep working on it.
I hope the above doesn't sound like a bunch of gripes, for that is not my intention. Overall I am pain-free, stronger and quite satisfied with my new knees.
Someone recently asked about post-op gait modifications and foot/ankle pain. I was getting pretty severe cramps in my right foot, ankle and shin and even calf during and after hiking. My boots are new-ish, so I replaced the stock insoles with "Sole Ed Viesturs Signature Edition" insoles. These insoles are heat moldable, but they will also conform to your foot over time without cooking them. I chose not to heat mold for fear of accidentally ruining them. WOW, I can now hike for miles over steep and rugged terrain without discomfort. I considered seeing a podiatrist, but I think I'm good now!
I will update again at one year, or sooner if anything changes.