There are 12 pairs of ribs, equally divided on both sides of the chest, connected to the sternum in front and the thoracic vertebrae in the back, forming a complete foot. When the chest is injured, whether it is a closed injury or an open injury, rib fractures are the most common, accounting for about 90% of thoracic fractures. Rib fractures caused by different external violence modes may have different characteristics: rib fractures caused by direct violence acting on a limited part of the chest, the broken ends shift inward, can puncture the intercostal blood vessels, pleura and lungs, and produce hemothorax or (and) pneumothorax. Indirect violence, such as when the chest is squeezed front and back, fractures are mostly in the middle of the ribs, the broken ends shift outward, puncture the soft tissue of the chest wall, and produce chest wall hematoma. Rib fractures caused by bullet wounds or shrapnel injuries are often comminuted fractures. In children, the ribs are elastic and not easy to break, but in adults, especially the elderly, the elasticity of the ribs is weakened and they are easy to fracture.