The really amazing thing is that even 20 years ago, a return to full activity with no limitations was nearly a given after a THR. The improvements here are mostly in terms of how quickly that recovery happens.

My mother, in her working life, was a physical therapist, but she's been retired for 25 years. In her career, the hip replacement was miraculous but required a serious hospital stay, and had a higher complication rate. Improved techniques and understandings about the recover process have made ENORMOUS differences since then.