Which sign indicates a possible rib fracture?

Which sign indicates a possible rib fracture?

• A. Paradoxical movement
• B. Bruising of the chest
• C. Shortness of breath
• D. Tenderness to palpation

Answer: (A)

Paradoxical movement of a chest wall segment is the sign that most directly points to a rib fracture. When ribs are broken in two places from multiple fractures, a section of the chest wall can detach and move in the opposite direction from the rest of the chest during breathing. This flail segment creates instability and severely disrupts ventilation, making paradoxical movement a strong, specific indicator that ribs are injured. Bruising of the chest can occur with trauma but doesn’t prove a rib fracture. Tenderness to palpation also suggests injury but isn’t as definitive by itself, since other chest injuries or muscle strains can cause tenderness. Shortness of breath can accompany many conditions, not just rib fractures, so it’s not as specific.

Paradoxical movement of a chest wall segment is the sign that most directly points to a rib fracture. When ribs are broken in two places from multiple fractures, a section of the chest wall can detach and move in the opposite direction from the rest of the chest during breathing. This flail segment creates instability and severely disrupts ventilation, making paradoxical movement a strong, specific indicator that ribs are injured.

Bruising of the chest can occur with trauma but doesn’t prove a rib fracture. Tenderness to palpation also suggests injury but isn’t as definitive by itself, since other chest injuries or muscle strains can cause tenderness. Shortness of breath can accompany many conditions, not just rib fractures, so it’s not as specific.