Which of the following is NOT a type of open soft tissue injury?

The chosen answer, swelling, is appropriate because it does not represent a type of open soft tissue injury. In fact, swelling is a physiological response of the body, often resulting from inflammation or injury, and it typically indicates a healing process rather than an actual form of injury itself.

On the other hand, lacerations, abrasions, and puncture wounds are classified as distinct types of open soft tissue injuries. A laceration refers to a tear in the skin that can create irregular edges, an abrasion involves scraping or rubbing off the skin, and a puncture wound is caused by a sharp object piercing the skin. Each of these injuries interrupts the skin's integrity and can expose underlying tissues to infection, emphasizing their classification as open injuries.