One leg paralysed and hen can't stand up nor walk! Please help!

[KranK]

I had this happen to a Guinea fowl once, I dont think it's the same thing because mine was more of a physical thing because my neighbors kid grabbed him by the leg but he wouldn't walk, one day he started using his wing to hold him up but then he stopped eating and drinking so we put him down so he wouldn't starve to death

so sorry for your bird