I have never had the vets do an ultrasound or anything like that just what is obvious to the naked eye. She is stiff in the right lead canter. She is completely fine in the left lead only has problems with the right lead. Her previous owners said that it is worse when she is out of work and during the cold months. Where I live it gets to negative 30 degree temps. and snows a lot. Unfortunately I don’t have access to an indoor on a regular basis to keep her in shape. The previous owners just said they had thought about doing them because of her stiffness in the winter.