I went to PT for my neck and hand(s) after a fall a few years ago, and was more informed than you at the time,
I wasn't at all surprised to find that the therapist had no clue as to PN
& had never heard of it before. Not only that, I gave her some websites to visit
for a better understanding and the next time I came in, found that she didn't even bother.
Not in her realm. Four visits and I was outta there.