I have a condition called osteochondral lesion in the subtalar joint. The doc I went to did use guided needle with sonogram (sonogram? I think it’s called) so she could see where she was going. I received five hyaluronic injections into the joint and it’s good so far! Walking pain free is not for me to take for granted any longer. Out of pocket expense, but to be out of pain it is well worth it. Maybe you can look around and find a doc who does this.