Howdy Katchmo: I had my RTKR in Aug of 2017 after having to skip some hikes with my family while we were on vacation. After 2 months I was regretting the surgery because of pain and my perceived lack of progress. I swore that I would never have surgery on my left. Now approaching 7 months and things are very different. I still get a bit stiff, especially in the morning but I am able to go for long walks (with the benefit of cortisone in my left knee), cook, take care of the garden etc. As an indication of how things have progressed in 5 months - I have my LTKR scheduled for May. Hang in there. Mobility will come - it just takes longer than we want.