Since I have only had small issues with tendonitis, I can somewhat relate. I am sure you did all the things we all do. Narrower neck, lower action, shorter scale and on and on. I am one of the biggest supporters of the "Never Give up" people, but even in my case, I know my issues are only going to get worse. It really sucks and I am sorry this has gotten all the way to this point for you.
Jim:
Really sorry to hear this. Scary.
Not to take away from your story, but I have started to have tendon problems and am at a loss what to do. Fretting index finger started hurting over the summer. Probably pressed too hard. Had a big bicycle trip (so no playing) scheduled in early Sept. which I saw as a way to give it break. Of course all my bands had me practicing and gigging a lot when I got back but it seemed better. Then one day I was using two hands to nail a nail. No, I didn't hit my hand. But I had a sudden pain and lump in that index finger:
Yes, it hurt. Laid off for a week and a half. The one gig I played I immobilized it and played (poorly) with the other three. It got better, but the pain still comes and goes. Saw my regular doctor but he recommended against seeing a hand specialist since he says they always go straight to surgery.
Folks who know some about this say it probably is the tendon sheath that ruptured or leaked, not the tendon itself, but who knows. I now play with it taped up to limit lateral movement of the tendon and limit how much flex it has. I am hoping this doesn't end up killing my playing career, and reading these posts gets me nervous.
I quoted iriegnome because I actually found something that helped, and it was a wider rather than a narrower neck. I've always been a J-bass player, and my P-bass had a J-neck. I just bought
this P-neck here on talkbass and have found it helps. Basically I don't bend the knuckle so much as my fingers reach across the neck rather than pushing down on the neck. Two few data points to know if this is real or not.
But enough about me. Hang in there Jim. Things always get better.