Interesting question. So bones can still cause alot of problems depending on how and where the bone breaks. Id say somthing like your pelvis because of its location. If bone pierces organs like the intestinal wall and your gut contents leak into your blood or tissues around it then you can die pretty quickly from bacterial sepsis (this is a problem when people have car accidents!). Sepsis is when bacteria gets into your blood and causes your body to go into shock.