I just had my left hip replaced on the 18th. I was very nervous because I have a lot of back problems also and I didn't know for sure what was hurting the most.This is my 5th day and I am still in pain, but it is a different sort of pain.I am walking better and my back has not bothered me . I think it was the best decision I have ever made.If I need to get the other one done I will not hesitate a day.