Emergency Medicine Test Prep

Answer: C - Vehicle collisions are the most common reason for flail chest injuries, which account for 76% of flail chest injuries. While falling is the 2^nd most common reason for flail chest injury in elderly. Rollover and crushing injuries most commonly break ribs at only one point and for flail chest to occur a significant impact is required to break the ribs in two or more places. In children, the majority of flail chest injuries can be a result of the common blunt force traumas but it is very rare.