What is Metatarsal Stress Fracture Displacement?

I got a call from a worried runner who had a stress fracture.  The fracture was not healing so he called for a second opinion.  One of the things that he did not understand was this x-ray report that he got. The x-ray report and it said that he had "two millimeters of displacement of the fractured metatarsal bone without angulation." So, in this episode, I am going to try to explain to you (the same way I explained to him) what "fracture displacement" really means and how it shows up on the x-ray in a runner.  What is metatarsal stress fracture displacement on an x-ray?  Well, that is a great question, and that is what we're talking about today on the Doc On The Run Podcast.