Mine spent 4 months on a lead and even after that moved to a long line so I could keep him restricted. The vet could not say for certain what the injury exactly was and xray showed nothing. Even now on rare occasions every few months or so he will throw the leg and limp a bit but it passes in a minute or two and does not affect him and happens less and less. This is going back 14 months or so now
But to get him there took loads and loads of rest and patience. Trying to keep a high drive young dog rested is not easy but the only way. I had plenty of advice and encouragement too keep the sod