Hi, Nancy,
I'm not on this site as much lately. Keeping up with work and having children, their fiancees and friends here for the holidays. But I do like hearing how you are doing. I think we both need to keep up with the exercise. It might be good to "report" to you about what I'm doing, and if you are inclined, you could do the same. I'd like to encourage you, and have you do the same. I'm in awe of our skiing friends, but since my knees made it impossible for me to ski even when I was a teen, it's not about to happen.
I have gone to the gym and cycled. And I've been doing six other basic exercises the PT at my surgeon suggested. He's the man I didn't get to work with but did visit once for some suggestions. Here's what he says: straight leg raises with weights (I use five pound wrap weights) three sets of twenty lifts and do each leg, not just the TKR knee; quad sets (tightening quads) one set of twenty each leg; knee bends with TKR knee (twenty held for a count of ten); march in place with high knees for three minutes; balancing on one leg--one set of twenty on each leg (twenty second holds); stand from sitting position in a firm chair, twenty times; and then fifteen to 30 minutes on the stationary bike. Today I walked and biked. I make sure I do each of these things every other day (at least). I have a bike at home, but I tend to do more when I go to the gym. Depending on how long I bike, I only spend a half hour to 45 minutes exercising. Sometimes I'm sore, sometimes I feel better afterwards.
Let me know what you're doing, and if you'd like to join in encouraging each other.