Steve, I won't sugarcoat it, the rehab and recovery is tough. You will need lot's of help just to do the simple things for a while. You will literally not have a good leg to stand on. Just by your research here I'm sure you have a good idea what to expect. I would line up a rehab facility ahead of time and ensure they know what BHR is. My primary PT didn't know anything about it, so I didn't have a lot of confidence in that person. I was happy to get out of there without getting hurt. A few people here have gotten injured by too aggresive PT. I would check out the McMinn Centre website, they have lots of good info there and video of simple rehab movements. Be conservative and think long term. I would also try to be as active as possible before surgery to keep your muscles strong, this will help your recovery. I realise this can be difficult with the pain you have, just do what you can without beating yourself up.
Dr Marchand and the staff really have confidence and that passes onto the patient. You're in good hands. moe