What type of injury occurs when tissues are crushed and there is disruption of blood supply?

The correct answer is contusion. A contusion, commonly known as a bruise, occurs when small blood vessels break due to trauma, causing blood to leak into the surrounding tissues. This injury results not just in discoloration but also entails the crushing of tissues, which can lead to swelling and disruption of blood supply in the affected area.

In this context, the other types of injuries do not involve the same mechanisms. An abrasion refers to a superficial injury where the skin is scraped or rubbed off, typically not involving a deeper disruption of tissue or blood supply. A laceration is a tear or cut in the skin or flesh that does not typically involve the crushing of tissues but may involve complete disruption of deeper structures. A puncture wound is characterized by a small opening created by a sharp object, and while it can also disrupt soft tissue and blood vessels, it does not entail the same mechanism of crushing and widespread tissue damage associated with contusions.