Upper rib fractures (C1-C4) indicate what about the force of injury?

• A. Fractures of the upper ribs require a high degree of force
• B. Upper rib fractures occur with low energy trauma
• C. They only occur in pediatric patients
• D. They are commonly due to repetitive coughing

Answer: (D)

Upper rib fractures can arise from stress-type injuries caused by repeated, small forces rather than a single, high-energy blow. Recurrent coughing raises intrathoracic pressure and continually tugs on the rib cage with each chest wall excursion, which over time can produce microfractures in the upper ribs. This makes upper rib fractures a classic sign of low-energy, repetitive trauma, especially in patients with reduced bone density or chronic lung disease. So the pattern fits best with a mechanism of repeated strain from coughing rather than a one-time, high-energy event or other population limitations.