Okay, is a Internal Fracture a fracture that doen't involve surgery...or is that a External?
Internal means inside. External means outside. The only fractures I know of that might involve surgery are broken bones. Since bones are inside our bodies, all bone fractures are internal. Most are simple fractures. Sometimes, though, a bone is broken with such force that one end of the bone protrudes through the skin; that's called a compound fracture.
Surgery is required for compound fractures. However, often doctors will perform surgery on simple fractures to place a metal rod along the fracture to keep it in place while the tissue heals.