When you get a stress fracture, you need the little bitty crack in the bone to heal. 

How do you do that?

First, you have to stop bending or torquing or twisting the bone in a way that led to the crack in the first place.

Second, you have to let the healing process take place. 

After the inflammation goes away, and after you get some collagen sealing up the healing crack, you start to get "ossification" of the bone where it turns into hard solid bone that you can run on. 

That happens through a combination of two different types of cells in the bone called osteoblasts and osteoclasts.

Osteoblast versus osteoclast, the battle that’s rebuilding bone after a stress fracture. 

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