Concomitant chest injuries may occur, including Aortic, subclavian, or cardiac injuries (uncommon but can occur with high-speed deceleration, particularly if rib 1 or 2 is fractured) Splenic or abdominal injuries (with fractures of any of ribs 7 through 12) Pulmonary laceration or pulmonary contusion Pneumothorax (see Pneumothorax [Traumatic] and Pneumothorax [Tension]) Hemothorax Tracheobronchial injuries (uncommon) Complications Most complications from rib fractures result from concomitant injuries.