Like everyone else, I hope the surgery goes well, and I am confident it will. My wife happens to be a physical therapist who does home health and works on what she calls total knee, the important thing is range of motion, which, of course, is limited due to swelling. My wife says she would be happy to give you an evaluation or even therapy on your boat free of charge, just let us know. Seriously though we are planning a quick north end trip first week in April, hopefully we can give you an encouraging report.