Hi SFAngel, Welcome to the Board
Sorry about your knee, but glad to hear it's feeling better. I hope it continues to improve.
From reading the chatter on here, I might have experienced the closest thing to remission as anyone posting, so I'll take a stab at an answer.
I was totally pain free. No symptoms, nothing.
This pain free period did only last 6 months, but that was nice. I believed I was cured during that time.
For me it happened right after getting a B12 shot, but that's neither here nor there.
Hope this info helps, and welcome again