Question: which ribs are fractured most commonly?
Answer: The 4th-10th ribs are the most commonly fractured 1. Fractures of the 1st-3rd ribs are associated with high-energy trauma 3. When the rib is fractured twice, the term floating rib is used to describe the free fracture fragment, and when three or more contiguous floating ribs are present this is called a flail chest.