Coachie, There are a several pain specialists in the Bangor area. I don't know why your PCP can't call a few and see how open their schedule is. You don't HAVE to go to the "rehab center". Your PCP can refer you anywhere. Also, YOU can call any of the pain centers, doctors or clinics yourself and see how far out they are, and if they need a referral from your PCP (based on your insurance guidelines).
You year's anniversary from your surgery is sooner than a possible appointment at the rehab center. My guess is that once you see Dr. Walsh, he may have a clue as to why you are having pain, and then be willing to possibly scope your knee, or do other diagnostic tests.
Please remember....the pain clinic is not going to be able to diagnose the problem without Dr. Walsh's one year input. If after you have tests, etc. to determine WHY your knee is in pain, and IF those tests come back inconclusive, it is then that the pain clinic will be to your benefit. You've already had an EMG, so you are way ahead of the game.
Stress is a BIG part of pain. I have been EXACTLY where you are right now. Jo and Jamie can attest to this. Please don't take this the wrong way, as I am only trying to help. If you are "anxious" and your medication isn't helping, I would talk to your PCP about that. Waiting when you are in pain really "stinks". Most of us are at the mercy of the "wait a year" period. Can you imagine how I felt knowing that my knee was put in crooked, and I had to go almost 4 months....4 MONTHS....!!!!! in order to have the revision surgery because I HAD to wait a year. You want to talk about frustrating and totally ticked off? !!!!!!
You are closing in fast on the one year, AND your appt. with Dr. Walsh. Try to concentrate on that appointment, rather than the appt. with the pain clinic if you can.