How long after surgery did this pain begin? If you were asked to point to the source of the pain, would it be the psoas and not the hip? Just curious because I went down the psoas path for six months with my surgeon, even got an injection in the tendon, so painful. Long story short, two years after my left THR, my second opinion surgeon suggested I had some type of sports hernia, which is the hardest to diagnose. He was right, I had two. I even remembered when I got them, it was in PT four weeks after surgery when my over aggressive therapist had me doing straight leg lifts. I had a sudden pain in the psoas region and never did PT again, couldn't. I was never told it could be a hernia, I just suffered in frustration. I'm doing pretty good now, hernia repaired last spring. Still have problems from time to time, can't over due it. When I say problems I mean some thigh and stem pain.