Larry-
I believe I am having the same problem that you are , maybe we can troubleshoot this together.
I had a left BHR on 3/31/15 and right BHR 12/4/15. I am 31 years old now and had hip problems from a young age that went undiagnosed until around age 25. Most likely spent many years with hip impingement. As a result, I think my brain has turned off certain muscles that could not function during the impingement and is now overworking others to compensate.
My left hip recovered great and I have no issues what so ever with it, you would not even know that I had an operation.
My right hip recovery was excellent initially...I was progressing much faster then with the left and was back attempting short running at 4-6 months approved by the doctor.
Then everything kind of dropped off and Ive been struggling since. My lower right back has been bothering me since June of 2016 and I cannot run for longer then 1-2 minutes before the inner part of my right knee cramps up, and then I suffer through lower back pain for days after attempting this.
Long story short I think I am having the same problem as you. My glutes, particularly my glute medius is not firing properly, or not firing at all really. the muscles are very weak and even doing body weight clam shell matrix and simple glute raises are difficult. The muscles feel like they got a good work out after the exercises, and they respond well to foam rolling, but the results are very short lived---- minutes, hours, or maybe one day if I'm lucky.
I'm thinking of doing the same as has been recommended by others here and starting over as if it is day one trying to rehab that way.
I have been suffering from what feels like a pulled right groin since June of 2016 which I am starting to draw the conclusion that it may be my PSOAS muscle that is causing this due to it being overworked and trying to handle the load that the glutes should be carrying.
I had built up a decent amount of range of motion post op, better then I had had my whole life actually approx 125 degrees hip flexion which is really good for me.
Now I can barely get 90 degrees hip flexion in my right hip, which is about where I was when I had arthritis which is pretty bad and just goes to show how much things have fallen off since.
hopefully we can push through this and get back to the comfortable pain free life style that we dreamed of hip resurfacing providing us.
Matt