Bit late to this conversation but, FWIW, I had this done back in Jan. I’d had several years of running induced pain and an inflamed calcaneous (with knobbles on it). Since the injection I’ve been totally pain free and its been nothing short of magnificent.
There is an issue around driving because of the local anaesthetic. As it was, I turned up to mine on my motorbike (in full leathers) and had to assure the Dr that I would call someone for a lift home.
I walked out expecting to be dragging my foot behind me but couldn’t feel any difference, so I got on the bike and rode home. Perhaps my boots helped.
I’ve not tried running because I’m afraid of starting it all over, though it was probably marathons that did for me. That said, it was one of the reasons for switching more to cycling and, at the moment at least, I’m doing so much of that there isn’t time for running.
HTH