The weights are for strengthening. My PT was starting to push weights just before I quit PT. When he first put them on, Sister (the nun in our PT group) said, "You're starting her with the heavy ones?" He had 5# weights on my ankles! I shot him my dagger look and said, "Seriously?" He switched to 2# weights. I tried it and... knees got sore, so the next time I said no to those. But 5#? Those would have killed my knees. Some therapists are all about "training" your knees and legs. We in the early stages of recovery don't need strength training. Strength is good, but stressing an injured joint is not.
And the extra step up? That's a stretch, too. I never did reach the highest step up, but imagine it would have been a bit much. Stairs now do the job of that exercise.
My stitch worked out and is now healing. It just kind of came out in the shower the other day when I was scrubbing down my legs, including incisions, with a loofah. Legs are looking good now. My OS looked at the spot and proclaimed it a stitch. He also said more might show up. Mine never became inflamed or painful, just pokey (the stitch itself). I was told to put hydrogen peroxide on it a few times a day, and I did that sporadically.