Originally Posted by Hello_Friend
I corrected my right arm position by straightening my forearm so it aligned with my hand (basically, I point my elbow upward now). This worked for a few days but the clicking has begun to affect my hand even with the new posture.
I don't have this particular problem, but I did suffer from problems with my ulnar nerve about 12-13 years ago that resulted in no playing for nearly six months and a relearning of my fingering patters to strictly 1, 2, 4, in most cases. Normally, I'd give you a big thumbs-up for keeping that elbow up and away from the bass to maintain a neutral wrist position.
However, these recommendations are a balancing act. No one rule is hard and fast for every player and there is certainly more than one rule/recommendation for physical position while playing bass.
I'll assume you are a thumb anchoring/finger-style type like myself; it's hard for me to imagine pain where you describe it if you don't play this way (so let us know on this topic).
When I damaged my ulnar nerve, I went to an orthopedic specialist in Boston; one who specializes in musician injuries. Hopefully you have one nearby. I'd firmly recommend you take the same course of action. I was debilitated for nearly six months, yet today, I can play as much as I want, pain free.