How do you repair rib fractures that connect to the sternum?

You can't.: Costochondral separations at the sternum generally repair themselves over time. Unfortunately, because the rib cage never stops moving, this may take many months. I have personally experienced this. In rare cases a chest surgeon may wire the sternum to the ribs, but this would be a very unusual situation.

Surgery: If surgery is indicated, I use plate and screws to reconnect the rib an sternum together.