@ossobuco,
Adding, I can see why you question all this, at least about the cortisone shot, but there may be good reasons for not doing that. But I would get a second opinion too.
I don't know any orthopods here, though I used to know the sharp ones in LA once upon a time.
I don't know if BBB would be eligible for UNM clinics but there are regular med departments of many specialties at UNM, as you know.. That'd be my bias, to check the orthopedic department out there... but that might bring up an insurance conflict. Still, from my past understanding, some folks were on more than one Los Angeles hospital staff.