I also had a flu shot mid Octo
ber high in the arm. After 3 weeks of agony and a medrol
dose pack (steroids), I went to
see a docto
r. Xrays showed nothing, but an MRI showed inflammation of the bone and a fluid filled pocket between my bone and periosteum. My docto
r feels the shot was given between the bone and tissue layer (peristeum) over the bone. The nurse even said to
me while giving the injection, I can't get it to
inject. I asked her if she was in the bone and she replied no.