Zak has had an x ray today which shows his right femur is not sat comfortably in the socket. There's an obvious gap. we noticed he was holding it funny this week. He's had the first of a series of cartrophen injections and will be on extremely restricted exercise. Because he's 9 months, the vet says this may resolve, but I don't see how. If you have experience of this, can you please tell me at what age you found out the dog had it, anything that's helped, any supplements/treatments and any optimistic stories would be gratefully received.