What happens is when bending thumb backwards, the motion doesn't stop but there's a "pop" and thumb bends up to 90 degrees backwards against thenar eminence. I have had students with the exact same feature. For right hand, this doesn't have any consequences. But for the left hand, it means there is no natural support for the neck by just holding the thumb relaxed. If relaxing it, it pops to almost 90 degrees angle backwards, looking terrible. No professional violinist I've seen plays like that. So the thumb has to be kept against "popping".
Has anyone encountered this and how have you solved this problem?
I can give my thoughts about it but before that I'd be very interested if there are other opinions and thoughts about this. How can you keep the left thumb relaxed (or relaxed enough) if you have to struggle keeping it not "popping"?Tweet
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