Hi Mac,
This is not exactly what you are asking, but it might still be encouraging. I had a cementless from Dr. Gross almost three years ago at age 57. I had not done any flat ground running for 12 years because of my bad hip, and I did not get back into serious running because the other hip is not that great on hard surfaces. I certainly can run now, but I limit it to dirt mountain trails, and beaches. However, I also had to give up tennis twenty years ago, and my new hip did allow me to get back into that. Not exactly distance running, but a lot of stop and go sprinting involved, and during the summers I now play about 10 hours a week. I started back into tennis at about one year, and built up to it with a lot of hiking, stairmaster, stair running, stationary bike, and finally forward and lateral hops and lunges with light weights, all of which started getting serious between three and six months; and then trail running and skiing which got serious at 6 months. In my case, my hip continued to get noticeably stronger and more confident for two years, which is the time frame that I learned the soft tissue is still repairing, and replacing scar tissue.
I am sure that you will get lots of serious runners on here that can be more specific about their training regimens, but I just wanted to add my encouragement about getting back into running type sports that we had to give up.