Re: double hip replacement questions
Sometimes people do both knees at once, but I don't know anyone who's had both hips at once. The movement restrictions (no bending past 90 degrees, etc) might make it extremely hard to do things like get in and out of bed if you have both legs operated at once.
My father had them done 1 year apart, and he's glad he did it that way. (It didn't take him a year to recover, he just found it most convenient to have surgery in the spring.) He's pretty strong and fit, and he was only 50/51 when he had the surgeries, but he thinks he would have found it tough to do both at once.
Whichever one is worse, I would take care of that one first.