I have kyphosis, which is a fancy word for hunchback. It can be managed but never cured, as it was diagnosed after I was fully grown. So I'll never have a straight back for the correct meditation posture.
Tried a few things. So far a chair has been okay. Perhaps this is superficial of me, but the chair lacks the gravitas of sitting cross-legged on a cushion. But the pain of doing so quickly becomes a huge distraction.
Anyone else had to deal with alternate positions for meditation? Anything in particular work for you?