hi Meriam i have a friend with mal female who had to go trough such surgery at about the same age 9 months after she's great, can walk again, won't ever be fully healthy dogs but utlist now she isn't in any pain and can live good life like any other dogs as much as i know such surgerys are very expensive and the after tretment is long, not all the owners are willing to go there i won't tale you to do or not to do it's fully your considerations alone but knw that it'll be long and not easy in the end if this surgery will save and preserve your dogs life and it wroth it :D good luck with it, please update how it all went