Should an injury runner assess running form?

I was recently doing a webcam call with an injured runner who wanted to know whether or not he should try to work on his running form.
 
He got injured and he started to get better. But the injury kept coming back. He was in a cycle of yo-yo healing. Better, then worse, then better again.

After a big race he got a lot worse.  His question was whether or not working on his running form might help halt the recurring running injury cycle.

Should an injured runner work on running form?
 
Well, that depends and that's what we're going to talk about today on The Doc on the Run podcast.