I enjoy that Godbound doesn’t even bother with any of the hairsplitting I’m reading in this thread. You’re a god of freaking Health, of course you can fix his legs. No dice rolling involved.
That is one big advantage of being divine, yes.
Even then, curses can complicate matters, and a pantheon without an applicable power will need to endeavor to make a change.
A Greater Foe could argue for a saving throw, especially if it’s against their will. A Gift might not even be enough if the deformity affects their divine soul, which sounds like a good quest hook.