Mike - hope surgery goes well. I was very active (soccer, basketball, running) prior to the osteoarthritis hitting both hips - then was reduced to cycling, but was riding 250-300 miles a week and entering 100 and 200 mile rides pretty regularly, so my leg strength and cardio were good. I'm 52, 6' and 170 lbs and did both hips in the same procedure (Dr. Vail at UC San Francisco - excellent). Dr. Vail tries to go in around the muscle, and I felt almost as if no muscle strength had been lost (all surgeons may do this, I don't know). Did a few days on a walker post surgery, then crutches then cane - but was walking without any support by day 21. I had a set of PT exercises which I did (overdid) religiously, but progressively longer walks and indoor cycling have helped a lot. Now at 11 weeks, I'm walking further than I have for 10 years (find some hills, they seem to help) and I'm back to the 1-2 hour spinning classes at almost the intensity I was at pre-op. Not allowed any "impact" yet - so no jumping or running. Looking forward to soccer in the fall and skiing in the winter!
As I said, the strength part has come easy - but I think I need to focus more on flexibility - so I'm looking into Pilates as a nice, easy way to start stretching things that haven't been stretched in many years. Also thinking about getting back to a more athletically demanding style of PT. Just not sure what the best path is.