Hi, meee! What a pickle you’re in–steroids might really help the knee pain, but high sugars might cause more problems. Others have shared their experiences and thoughts–next step, I would think, is to talk to whoever helps manage your diabetes. Folks on insulin have shared. I’m on insulin now, but wasn’t when I had a severe allergic reaction to antibiotics–intravenous steroids, then pills for a week! Did lots of testing, cut out carbs as much as I could and talked with my doctor regularly that week. Since then, I’ve had injections in my hands and foot without significant BS problems, but I was prepared–test, test, test and talk to the doc.
Don’t pass up an opportunity for relief. As Buffy the Vampire Slayer said, “Fate favors the prepared!”