Hello @meags ,
I'm on 1mg of anastrozole for the past 20 months (among other things). I've had trigger fingers on my right hand and was referred to an orthopedist. I did 2 months of occupational therapy first (wrapped my hand in heated blankets, hand massage, massage with an ultrasonic vibration tool), wore a splint. It felt good during the therapy but only worked briefly so she injected cortisone to my finger and I've been -mostly- fine. When I make a fist with my hands, I can feel the difference between the left and the right. My right hand is a bit numb and stiff. Mine is bad especially in the mornings.

Try an orthopedist who works on hands. Mine was aware of the aromatase inhibitor side effects.