Is it normal to have pain in the knee after having a cortisone shot

Hello. Thank you for writing.

A cortisone flare sometimes called a “steroid flare,” is a side effect of a cortisone injection. Cortisone injections are often used to treat osteoarthritis in joints. The injections use steroids to decrease the amount of inflammation in your joint, which will often decrease the amount of pain you experience.
Common areas to receive the shot are the:
-knee
-shoulder
-wrist
-foot
When you experience a cortisone flare, the shot can cause intense pain at the injection site, especially at first. The pain usually shows up within a day or two of the shot. 

Helena