Dig into the body's biological process that heals a broken bone, and find out how different kinds of fractures are mended. -- The human body’s 206 bones come in many shapes and sizes: short bones, long bones, flat bones, irregular bones. Roughly 50% of people will break a bone at some point in their lives. But whether the cause is as mundane as a slip on the ice or as dramatic as a tightrope-wal