This guy needed real mental health care not a surgeon.
Don’t rule out guitar playing. :) There are guitarists who are missing or have lost use of some fingers. Phil Keaggy amongst them.
https://youtu.be/S7WfOPeAMLc?si=Xcyjd6BhSchZyl_J
I met a dude named Tony Melendez who plays guitar with his feet, on account of he has no arms. Birth defect due to thalidomide, IIRC. His toes are unusually long, and he can use them to pick up his guitar. Quite a remarkable fellow.