Final answer:
The question likely refers to Lefort fractures, which can result from car crashes, with Lefort II and III being associated with high-velocity impacts.
Step-by-step explanation:
The question refers to types of facial fractures named Lefort fractures, which are classified into three main types based on the level of maxillary bone injury. Although not specifically mentioned in the provided excerpts, Lefort fractures can indeed occur during car crashes, commonly from the impact against the steering wheel or dashboard. Among the three types, Lefort II and III fractures are often associated with high-velocity impacts, such as those sustained in car accidents. The clavicle is also identified as the most commonly fractured bone in the body, which can be relevant to car crash victims as well.