Paralyzed leg

Hello,

My female chinchilla is 8 yrs old and on Thursday night, I found that she couldn't move her left hind leg at all and can barely move her right hind leg. Took her to the vet yesterday but the xray shows there is no problem with her spine and there is no bruising anywhere.

She refuse to eat on her own so I'm giving her baby food (as the vet suggested).

Can anybody let me know why this can happen?

And if there is anything.... ANYTHING at all that can help her?

Thank you,

Justina