Well, that's the question I suppose. My surgeon advised that if the operation they wanted to do didn't work they could still do a replacement. And I supposedly am younger than they like to do replacements on as they have a finite lifespan. Some say that's BS pushed by insurance companies to save money while some say outliving the replacement is a legitimate concern. Hard to sort out the truth of it I suppose. It sounds like I could have pushed for the replacement but at the time the notion scared me and the surgery they did seemed less scary.
In any event I can do most things that I could before but I don't have the range of motion I did before.