Tim, I'm not trying to be cruel one bit but I think where you really need to focus is some kind of a weight loss plan. All the surgeries in the world aren't going to do squat unless you get yourself in better shape. 375lbs is a big man, thats allot of wear and tear on your knees and definitely isn't good for your ticker either. Once you start some kind of weight loss program don't get lazy and put it off. You've got to want to do it or it will never happen bud and your knee's will never be any good.

Good luck and take care of yourself, you've got allot of hunting ahead of you yet my friend!