I’ve talked about this before somewhere on this forum. When my right hand thumb was caught between a heavy door and the jam, my thumbnail died. It took almost a year for it to grow back from the quick. During that time, I used product called “Alaska Pik”, a plastic finger pick that clamps over your finger nail.
ngles: I had to customize it by filing the top so that it just protruded over the thumb like a nail and carving an arch on the bottom so as not to interfere with the thumb joint. I was able to play as well as with my natural thumbnail. It sounded quite fine.
Not that I'm advocating picks. Just my experience when I was missing a fingernail.
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