Cuboid stress fracture vs. truly fractured cuboid bone. How can a runner tell the difference?

If you're a runner who has been told that you have a cuboid stress fracture, you might be worried that there's an actual crack in the bone.
 
A visible crack on x-ray is what I think of when I picture a truly fractured cuboid bone. There is a huge difference between a cuboid bone with a crack, vs. without a crack. 
 
The cuboid bone is an irregular bone. It's small, but it's important. It sits right in between your heel bone and the fourth and fifth metatarsal bones.
 
When you roll your ankle and your foot rolls under you, you can compress the cuboid and crack it. 
 
Repeatedly compressing the cuboid can lead to a stress fracture in the bone. 
 
What's the difference between a cuboid stress fracture and a truly fractured cuboid bone? 

Well, that's what we're talking about today on the Doc On The Run Podcast.