Yes, there are. I have a physical therapy/ rehabilitation rotation next semester. There are several exercises, stretches, as well as underwater treadmills and other therapies. Most of the dogs who go through orthopedic surgical repair for whatever joint issues do some PT here as well. Interestingly enough, little dogs are seen more often than big dogs. Little dogs tend to refuse to use the limb post-op more often than big dogs. However, bigger dogs tend to re-injure the limb or the opposing one from lackj of follow through in the owner's part (or sometimes just added stress from weight bearing).