Though I would never have called myself a "runner", since I never ran competitively, I did run on a regular basis as part of my skiing and martial arts conditioning for much of my life. I quit running about 20 years ago, due to back surgery, and the beginnings of my hip issues.
At 5 1/2 months after my resurfacing, I went for a 45 minute trail run (really more of a jog) in the mountains yesterday,
most of it uphill (I walked the trails back down, because I do not feel quite ready for the extra jarring of downhill running). I have been building up to this with 2-4 hour fast paced trail hikes every day, and today just felt that I had to break into a jog. It felt great the whole time, and no after affects.
Ironically, walking around the house still involves some clicking, limping, and stiffness; but once I am a block or so down the trail, that pretty much all goes away.
It is worth noting that this was on soft dirt trails, and going uphill involves less heel strike impact than running on the level.
Anyway, it feels like another great milestone. As an argument for controlled running; building and maintaining bone strength and density around the implants is going to be one of the biggest factors in long term results. Some amount of regular repetitive impact is important to bone health. As Dr. Gross says, though no one knows how much is too much, some amount of impact activities would seem important to long term results. (By "impact", I am obviously not talking about falling off your bike, but the type of foot to ground impact that occurs in many sports activities.)