[Traumatology of the facial skull in bicycle accidents].

About 15% of all traffic-related personal injuries involve bicycles. In 1989, 67,085 injuries involving bicyclists were registered in West Germany. The city of Münster is a particularly suitable site for studies of bicycle-related injuries because a high percentage of employees and students ride bicycles to work. The severity of bicycle injuries depends on the degree to which the head is traumatized. However, studies concerning trauma to the head in bicycle-related injuries are rare. The risk and the distribution of facial injuries in bicyclists is analyzed within the present study, which covers 78 patients with a total of 88 cranial fractures. The zygomatic and alveolar and orbital regions were most frequently fractured (35%), including 7% blow-out fractures. Thirty-three percent were fractures of the mandibular region, 12% of the bony nose. The soft tissue of the face was injured in 72% of all patients. Middle-aged male patients are more likely to suffer severe bicycle-related injuries. Bicyclists with a significant blood alcohol concentration are more likely to be involved in accidents that are their own fault. The results show that the helmets generally worn are not sufficient to prevent most facial injuries.