I still have swelling from a LTKR done in December 2019. No pain, just swelling. It has gone down a little bit and I've learned to live with it. My thoughts on the Prednisone... I thought that drug was used to calm down inflammation plus it's a steroid. Is there inflammation somewhere causing the swelling? Did the doc take x-rays to determine the cause of the swelling? I would opt out of the Prednisone. If the swelling isn't causing any pain that's good! Recovery from TKR can take up to a full year, more for some folks. Hang in there.