Breaking a leg during a football game is an example of which type of injury?

This injury is a fracture.

Explanation:

Breaking the leg means that there was a break and the break of some bone in the leg, this is a fracture. Fracture occurs when there is a loss of bone continuity, the breakage of the bone itself. While bones allow for some flexibility, they are still rigid. When bent or affected beyond its elastic capacity, the bone will break. There are different types of fracture, and severity usually depends on the type of impact the bone endured.

Nerve cells are much longer to aid in sending signals to and from the brain.