hello, several years with a 96 bass gave me recurrent tendonitis... osteo, physiotherapy, muscle strengthening (perhaps not enough), it continued and with age it's perhaps less so
I read Coralie Cousin's book "le musicien, un sportif de haut niveau"(ed.AdHoc)it talks about postures on the instrument to avoid the inconveniences associated with it... but it doesn't talk specifically about accordionists, which is a pity...
so I changed accordions for a 60-bass, with the work of adapting to most of my pieces, inevitably missing notes... and sound possibilities
I've seen several people who've stopped playing altogether, because it was easier for them
have any others here had similar experiences? what solutions have you found?