Is it risky to run with cuboid fracture?

I was on a call with a marathoner who had a cuboid fracture.

He was getting better, and he was trying to figure out how he could start running.

The cuboid bone is an irregular bone at the base of the metatarsals, and it's sandwiched in between the fourth and fifth metatarsal bones and the heel bone. It is a bad bone to break. So he had a valid question:

Is it risky to run with a cuboid fracture? 

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