Ok, I'm sorry for bringing up all the stats and arguments about the LR. The post is titled 'lateral release ... is it worth it??'

, so I guess I will have to say I don't know, I don't think anyone can answer this.
If you've absolutely decided to go ahead with this, then of course, you have to keep positive and look forward to the best outcome.
I've had the LR done. The first little while is difficult, but about the 4 or 5 month mark, thats typically when you should start seeing a difference. It takes a while for the quads to start working again and for the swelling and incision to heal up. A lot of cases will bounce back even earlier than that, I was lucky to have all swelling gone and full ROM at month 2.
Your OS will probably have you working ROM early on, just follow their directions. I think with the LR, you just want to take it a day at a time and understand it is potentially a bit of a long haul, with the first few months being a bit slow.
Don't get frustrated if the quads take some time to return. My OS, after evaluating the knee post LR felt it would be necessary to wear a brace or neopreen sleeve to keep the kneecap more stable, for the few months at least. You may want to explore that early on as well - ask you OS.
Hope it all works out!