Sire
I think that the rollover could possibly have been fatal.
You will definitely have some serious pain. What I have read about the knee jint replacements is that they are a lot better now and go a lot easier on the patient than ten years ago when miz micro had to have hers replaced..
Are ya getting the robotic arm assisting in the procedure also ? That would be great for you as it is much more precise and fits are really good.
Do you think it will be harder on you than the total hip replacement? Hope not but I have no idea.