My biggest fear (aside from the surgery) is not being able to resume and maintain a highly active lifestyle post-surgery. I am 43, and other than my bad hip (hips, actually), I still feel at the top of my game (physically). But unfortunately, because of my hips, I have had to reduce my activity levels over the years, and my mobility and range of motion in both hips is pretty reduced; most days, I feel stiff and inhibited physically, which has a tremendous psychological impact. And that psychological impact is made worse when I think about the possibility of not being able to walk or move properly post-op.
I realize that most people have very good results from hip replacement surgery, but how many of those folks are highly active individuals who return to things like weight lifting, martial arts, cross-country hiking/mountain biking, etc? Being able to simply walk around and take a leisurely stroll or bike ride is one thing; being able to resume a more rigorous, hardcore type of active lifestyle is another. I worry about being condemned to living a relatively sedentary, non-rigorous type of lifestyle -- and that scares the hell out of me!
My hips have been bad since age 13, but luckily for me, I have managed to wring as much life out of these hips over the years as I possibly could. But still, there were many activities that I was not comfortable doing because my hip range of motion was too restricted. I always wanted to try various types of martial arts, but because of my hip stiffness, I had to settle for boxing only. And I used to love to run; I used to be a pretty solid runner for a number of years, but I haven't run in about ten years or so (and I don't plan on running after surgery either; running is one activity that I don't mind giving up). But I always had this utopian-like vision that once I got my hip (or hips replaced), I would be back to near 100% capabilities, but I'm not so sure how accurate that belief is. In terms of performing the activities of everyday living I'm sure I will be near 100% functionality; but for more rigorous athletic pursuits, I may have to settle for a much lower number of functionality.