Re: Sprinting. I definitely think it is do-able. I am not Usain Bolt. However, at 2 months post op I started trying to jog as well as sprint. My first attempts were pitiful, and what should I have expected as I was still limping when I walked? I tried racing my 7 year old daughter 60 meters and she killed me. I kept trying. Now she won't race me, nor will my 9 year old son. I can beat them easily. In the years before surgery I used to run up the hill near my house as part of cross training for ju jitsu. It's about a 300-400 meter run up hill, and I could do 4 of them at about 2:03 each with 7-8 min rest in between. My fastest time, as far as I can remember was about 1:53. Anyway, a month ago I tried and could not make it up the hill even once. Nothing to do with the hip; I simply did not have the gas in the tank. I kept trying. Yesterday I did one run in 2:11 and a second one in 2:07. All this to say that if you had it prior to surgery, probably (with a lot of hard work) you'll get it back after surgery. I am now even diving off a diving board with quite a bit of spring, (which I used to do prior to surgery). Again, my first attempts (about 6 weeks ago) were pitiful; I felt like jello bouncing on a spoon. But, I kept trying, and now I honestly see no difference from my pre-surgery state. Bottom line: It's probably a matter of what you were able to do in the months/years prior to surgery (ie if you haven't sprinted in 15 years is it reasonable to expect to be able to sprint after surgery??) combined with your own motivation, patience, and hard work. I would be very interested to hear your progress after you have had your surgery. Please keep us posted.