I have just started on the drug after reinjuring my knee after kneecap replacement surgery. Due to the injury, my doc says I have some more arthritis developing. She gave me a Cortisone shot to help make me more comfortable until the Celebrex kicks in. Don't want to do another. OUCH! They hurt and have not helped in the past, but doc wants to give it a try for comfort measures. Any advice would be welcome! Thanks!