Name a common sign of a fracture.

Swelling and pain at the injury site is a hallmark sign of a fracture because these symptoms often occur due to the body's immediate inflammatory response to injury. When a bone fractures, the surrounding tissues—such as muscle, ligaments, and skin—can be damaged, leading to inflammation. This inflammation contributes to swelling in the area as fluid accumulates and blood vessels leak into the surrounding tissues. Additionally, pain is typically present due to the activation of pain receptors in both the injured bone and the surrounding soft tissues. This combination of swelling and pain helps healthcare providers assess and diagnose fractures effectively, making it a key indicator of such injuries. Recognizing these symptoms is vital for timely intervention and appropriate treatment.