our euro kitchen cabs have Salice pie cut hinges (series 200?) for the 90º corner cabinets.
Without the lazy susan, just doors and shelves.

One hinge set was installed crooked when they were done, a decade ago.
Can a better adjusting hinge be retrofitted in it's place?

Now I see much better solutions to a 90º corner, though they mostly seem to compromise the amount of space.

The rest of the hinges are Blum and seem to be much better and stable over time. Dunno why they choose to install these Salice, but the cabinet maker made plenty of errors.