I had my hip resurfaced on March 30th and what you describe sounds like what I have... The joint itself feels great but this nagging discomfort in my groin just won't go away. I've started exercising and swimming and still really no difference in the discomfort... I do believe that it's just a matter of time. Remember, in order to keep the hip's ball and neck stem, our hip attachments were stressed much more than with a traditional hip replacement - I figure that they just got over stretched during the surgery and are still trying to figure out where they will be happy in the hip
Are you still having any problems with your knee? I know they twist and turn your leg into all sorts of configurations when they perform the surgery but, since the surgery, I can't bend my knee (on the operated side) enough to squat down and I can't kneel on it either. There is also a noticeable lump on it... Is this another one of those "give it time, it could take up to a year to heal" things?