Which of the following is NOT a type of blunt force injury?

A fracture is indeed the correct answer, as it is the only type of injury listed that is not classified as a blunt force injury. Blunt force injuries occur due to impact or collision with a non-sharp object, resulting in damage to the body without penetrating skin.

Contusions, commonly known as bruises, occur when blood vessels are broken beneath the skin due to the blunt force impact, leading to discoloration and swelling. Abrasions, or scrapes, involve the outer layer of skin being scraped off, which can also occur from a blunt force impact. A fracture occurs when a bone breaks due to the same type of force that leads to contusions and abrasions, but it is categorized as a type of bone injury, which is more specific and not directly comparable to the skin-related injuries like abrasions and contusions.

An incision, typically caused by a sharp object, does not fit the profile of blunt force injury, as it results from cutting rather than impact. Hence, while others are types of blunt force injuries, a fracture stands out as a distinct type of injury, making it the answer to the question.