Final answer:
An impacted fracture occurs when the broken ends of a bone are forced into one another, causing the bone to shorten. It is a compressive force fracture.
Step-by-step explanation:
The type of fracture that results when the broken ends of a bone are forced into one another is called an impacted fracture. In an impacted fracture, the bone is compressed as the broken ends are driven into each other, causing the bone to shorten. This type of fracture is often seen in long bones, such as the femur, when they are subjected to a compression force.