I don't know who you are flying with, but I know with Qantas that if any part of your pram is damaged you can report to Baggage Services on your arrival and they will take your details and get the pram repaired/replaced (depending on the damage!) Travel insurance will also be of assistance, but they have an excess, of course.
Hopefully nothing will happen to your pram - just remember to fold it up securely and tape or strap it together. Better still if you have some sort of sleeve/cover to go over it.
Hope this helps.