Seatbelts have reduced the mortality from road traffic trauma significantly since their introduction. However, they do present with a pattern of injuries depending on whether two-point (lap) or three-point (lap and chest) seatbelts are used.
In the chest a typical pattern includes: sternal fractures, cardiac contusion and upper thoracic spine fractures +/- rib fractures.
Cardiac contusions are often clinically and almost always radiologically silent. Troponins and ECGs can be used to assess for this injury, which is often associated with sternal fractures.