If you get a metatarsal fracture and it does not heal, doctors call it a "non-union." 

Sometimes, even if you have a non-union you can still run. Maybe without surgery.

The single most important consideration with a non-union is stability.

The more stable the bone is, the less likely it will cause pain.  

The more stable the bone is, the sooner you can start running. 

The more stable the bone is, the less likely you will need surgery.

What's the best imaging study to assess non-union stability when you have a fracture? 

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