Should I get a CT scan or test walking to see if fracture is healed?

Today's episode comes from a discussion I just had yesterday with an athlete. He had a metatarsal fracture non-union. A "fracture non-union" can develop when there is a crack in the bone that moving a little bit too much and doesn't completely heal. Non-unions can happen if you get a stress fracture, and you keep running on it and you're tough and you're strong and it doesn't really hurt that bad. If you keep running and repeatedly stress that crack, it can't heal. Should I get a CT scan or should I test walking to see if my fracture is healed? Well, that's what we're talking about today on the Doc On The Run Podcast.