My dog turned one year old today. I had him xrayed yesterday because he had stopped using his back right leg the week before. The xrays showed that the femoral head on the right rear leg is under developed and doesn't 'fill' the socket like it should. My vet has me resting the dog for 8 weeks to see if the limp improves. If not, off to the specialty vet clinic for an evaluation. Has anyone experienced this in a dog before. My vet was unfamiliar with this and thinks its possibly a GSD thing.