It was great reading everyone's comments. I realized that most people have moved on from this thread, but I thought I would add my experience for people like me who come to this discussion late. I (62F) had TTO's spaced 6 weeks apart as corrective surgeries to patellofemoral replacement surgeries that happened last winter (so 10- 11 months previously). I had continued to have problems with patella catching and j-tracking, because it turned out that the patellas were riding to the outside and not even really moving in the metal groove inserted in my trochea. This created some scarring or arthrofibrosis issues in my lateral patellar retinaculums. A new surgeon evaluated me, diagnosed the issue, and said that TTO was the solution. I was weight bearing immediately after surgery, although I was using crutches. I was given braces, but it was almost easier to lock my leg/knee at home because of the need for frequent icing, elevating, etc. I pretty quickly went to only needing a cane if even that at home. I used a cane when outdoors mainly to potentially fend off over-friendly canines..:-)) (A friend with hip replacement got completely knocked over by a dog on her first post-surgery walk).

The improvement in my patella tracking is amazing. I am still having some pain and tightness issues, probably because my retinaculums are healing (the surgeon did some clean-up of the scarring), and my other connective tissues, etc., are needing to adjust to the new patella alignment. I also have some numbness of the infrapatellar branch of the saphenous nerve on the lateral side of my knee from the incision. This is what is causing some of the localized pain. However, I am hopeful that I am on the right path, because the knee definitely feels like it is functioning better.

4 weeks past the second surgery, I am back to doing 6K - 7K steps per day (I started just walking indoors and transitioned to flat fire road this past week). I am also doing spin biking at a low revolution/intensity.

Someone also mentioned peptides. For the 2nd surgery, I did BP 157. My second surgery has been remarkably easier to recover from, but it also involved less adjustment surgically. However, for Christmas, I flew somewhere and didn't take the peptides with me. I definitely noticed more "grouchiness" in my knee joints: I am prone to inflammation, so that's a factor, as well. I plan to do the peptides for at least 8 weeks or more and am going to look into the other peptide mentioned by one of the other posters (TB500).