Final answer:
A displaced fracture is the type of fracture that causes an actual deformity of the limb, and often needs medical intervention such as closed or open reduction for proper healing.
Step-by-step explanation:
A fracture that produces actual deformity or distortion of a limb by shortening, rotating, or angulating it is known as a displaced fracture. Unlike a nondisplaced fracture, where the bone remains aligned, displaced fractures often require a closed or open reduction to set the bone back into its natural position for proper healing. An open fracture indicates that the bone has broken through the skin, while a closed fracture does not involve any piercing of the skin.