Hi Nyles, I shall try and give you a straigth answer sans flipancy. Hip and groin is exactly how my osteo-arthrits manifested itself in the hip area after I already had had a unicompartmental knee replacement [ one side of the knee replaced with metal parts] 4 years ago I was referred to a physio bacause of pain in the groin area and it son became clear that it wasn't muscular and here am I now with one total hip replacement 2 years ago and awaiting the other one to be done August/September. The problem I have now is walking any distance at all. It would appear that my arthritis is of an aggressive variety and my hip is degrading rapidly - far more so than I ever thought it would. However, it is clear that I am only too grateful it is not the rheumatoid variety.
My experience isthat so much depends on the quality of treatment you have, how long you have to wait for it [treatment is free here in the UK but there are waiting lists to see specialists also depending on whee you live. I was fortunate enough to live near an orthopaedic hospital that is a national centre of excellence in the treatment of orthopaedics.
If I had gone to my local general hospital I would have come out worse than I went in such is its reputation.
Any other info please feel free to ask.