I had the surgury 2 years ago, had the patellar graft. I got infected on the table, had another scope a week later to clean it out. I had the machine, the extension board, the jas splint, and muscle stimulator, it sucked ass. I also had a pic line for antibiotics, I couldn't lift for 6 weeks, lost 20 pounds. I wanted to die!!!
After 8 months of rehab it's good as new and stronget than ever. I'm squatting, leg pressing, lunging, and play softball or other sports without a brace. Just do what your PT says, and take it one day at a time, it will go fast. It doesn't seem like it now, but it will.
Just keep a postive attitude, take it one day at a time. It takes 6 weeks fir the graft to vascularize, at 10-12 weeks you can lift on it again. However, very light to begin. So prolly like two months before things really get moving again. It comes back very fast. I recommed if you didn't knee wrap before, do it know.
Stay strong, and keep at it.