Dear Doctors: I slipped and slammed my shin on the metal ledge of a moving van. I could still move my toes, turn my foot, stand on it and walk, so I figured it wasn’t a break. A few days later, a big lump showed up, with lots of swelling and bruising. Could it be it actually was broken?Dear Reader: The bone you injured is known as the tibia.It is the second-longest...