Explain the difference between a simple fracture and a compound fracture.

• A. A simple fracture does not break the skin; a compound fracture breaks the skin or communicates with the external environment.
• B. A simple fracture involves multiple bones.
• C. A compound fracture only occurs in children.
• D. A compound fracture heals without treatment.

Answer: (A)

The main distinction is whether the skin is broken. A simple fracture (closed fracture) is when the bone is broken but the skin over the fracture remains intact, so there’s no open wound communicating with the fracture site. A compound fracture (open fracture) is when the skin is broken and the fracture communicates with the outside environment, meaning there may be an open wound and the bone can be exposed.

This difference matters a lot in treatment and prognosis. Open fractures carry a higher risk of infection because bacteria can enter through the wound, so they typically require prompt wound cleaning, possible debridement, antibiotics, and careful monitoring, in addition to proper immobilization and stabilization. Closed fractures still need immobilization and medical evaluation, but the infection risk is not as immediate a concern.

Some descriptions of fractures aren’t defined by skin integrity—claims about multiple bones involved or healing without treatment don’t capture the essential clinical distinction between open and closed fractures. Understanding the skin status and potential contamination makes it clear why one is treated as an open injury and the other as a closed one.