Hi Skye and welcome....
I suffer from severe osteoarthritis, and am due to have a total knee replacement as soon as my sugars have come down to an acceptable level. A fairly sizeable injection of steroid would help my knee in the meantime, but again the sugar levels mean that the surgeon is very reluctant to give it. He did explain that the steroid would certainly raise my already high BS level.
I do have twice-yearly injections of steroid into my thumb or thumbs, but the amount is much lower than my knee would need, so my doctor feels it is worth the risk. Mind you, last time I had my thumbs done was long before I was regularly checking my BS. So I have no way of knowing how the last injections affected my BS.
We (that is I, my orthopaedic consultant, my diabetes consultant and my dsn) are aiming for the op to be done in the next 8 weeks, and I can't wait. Once I have recovered, I am hoping to be able to start some gentle exercise, before the other knee gets too bad and precludes it again!!
And of course, having to use a stick at the moment means my thumb(s) are worse than ever!! One thing always leads to another!!