Swollen feet, ankles, legs & knees

I had PMR a few years ago & it affected my arms and hands. After being on Prednisone for a year it cleared up.
Last summer my feet, legs, knees & thighs became very swollen & I needed a walker to get around. In addition a wheelchair was necessary if the distance was too great. I have been on Prednisone since November & Kevzara to no avail. Looking for a solution.