If I have right knee osteoarthritis, do I have to work out my left side as well?
I was recently asked by a patient why he had to work out both sides of his body in physical therapy if only his right knee hurt. I can understand some of the confusion. After all, if your right shoulder were painful and inflamed and required an injection, the medication would only be put at the site of inflammation -- in your right shoulder. You would not be a candidate for a right and a left shoulder...

