I don't like cortisone shots, not one bit! I realize that they are helpful in some cases, but the number of shots you can receive is limited in order to prevent further damage.

In my case, that number was <1. I herniated a tendon sheath in my palm- base of my third finger (too much rock climbing, oops!), and received a cortisone shot to reduce the swelling and lack of motion. It worked- kind of- until about a year later when the problem came back with a vengeance. I apparently did not have a good reaction to the cortisone, and my connective tissue was weakened- and this time I had to undergo surgery to repair it. It was an interesting experience- I couldn't drive a stick shift, write on an overhead while teaching, nor button my own jeans for a while. Good times!

So be careful with the cortisone, okay? It may temporarily relieve pain, but it will not address the underlying issues that are causing your problem. Hope your knee feels better!