Hi rdharris - I was 10 years older than you when I went to see my orthopaedic surgeon for an opinion about my hip arthritis. I had some pain and a lot of stiffness, running was limited to a weekly 5k parkrun but I did no training. Biking was OK, skiing painful, walking could hurt sometimes and be OK others, the main thing was I was getting more and more miserable about getting old and infirm.
Fortunately I had kept up my health insurance after retirement, and I knew someone who had a BHR ten years before. I found the McMinn website, watched the operations, digested the various statistics and chose my local surgeon (who is a hill-walker/diver) to tell me if I would be suitable (on the edge of the envelope for age and bone quality). He said he would operate on my left hip but the right one had a couple of years to go.
Having been told I could get what I wanted I then spent a month worrying about just how much I wanted it!
Then I made the booking and was fixed up a month later. Read my posts for more details but I was jogging slowly at 8 weeks and running properly within 4 months, having done more than 50 5k runs and trained up to 13 miles, as well as biking 60/70 mile days, since then.
Still got the natural hip to slow me down but I am basically back to normal, climbing well indoors, biking, running and distance walking in the hills - and the whole process of dynamic recovery from the operation was a great experience, for once things were getting better (most days) rather than slowly getting worse!
See a quality surgeon, get an opinion then get it done!
Pete