I finished my PT and the doctor was happy with my results at 6 weeks; it takes a while longer to get the full range of motion (stretch out both legs and see how straight you can make the leg, and bend the knee and see if you can make the bend as sharp as the other knee). I was back at the gym six weeks after the surgery, working on that. The scar tissue is "sticky" - it adheres the wound area to the bony area beneath and you have to work it loose also. I still have kind of a dimple above my knee from the scar tissue; YMMV.