Hi Krank
I had authoscopic surgery on the r-hip a year and a half ago , then i cut my heal on the same side and rsd surfaced there, Then I had a THR on the same hip,,& months ago and im still on crutches,,,the rsd has spread to the joint behind the cup. I had a bone scan done and it revealed activity[hotspot] behind the cup. either the cup is loose, or its rsd..my money is on the obvious,,,My hope is in God to heal me,,good luck to you,,,pm me for specifics if you like,,,,,,,,,,,bobber