Final answer:
A simple fracture is a broken bone that stays within the body, while a compound fracture is when the broken bone pierces through the skin.
Step-by-step explanation:
A simple fracture refers to a broken bone that remains within the body, without penetrating the skin. It is also known as a closed fracture. On the other hand, a compound fracture, also called an open fracture, occurs when the broken bone pierces through the skin, creating an external wound. This type of fracture requires immediate medical attention to prevent infection.
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