I have read several posts here about tendonitis, trigger finger etc but I am unclear whether this is what I am suffering from.
I am an amateur guitarist in my 70s, had a bit of arthitis in my left wrist, which could be controlled by Voltaren gel.
Suddenly I have another problem: after playing for about 15 minutes my left index finger goes completely taut and locks painfully in a straight position about 45 degrees forward and away from my other fingers, towards my palm. I have to gently push it back to a normal position, but as soon as I try to start playing, off it goes again and locks up straight and angled forward.
I would be grateful for any comments, diagnosis, ideas - in fact anything at all from anyone who might be able to help.
Many thanks in advance!