Department of Maxillofacial Surgery, Oslo University Hospital Ullevål, Oslo, Norway.
Department of Oral Biology, Faculty of Dentistry, University of Oslo, Oslo, Norway.
Dent Traumatol. 2022 Oct;38(5):424-430. doi: 10.1111/edt.12756. Epub 2022 Apr 28.
BACKGROUND/AIM: The mandible makes up a substantial part of the lower face, and is susceptible to injury. Even in helmeted cyclists, accidents may lead to fractures of the mandible because conventional helmets provide little protection to the lower part of the face. In addition, some studies indicate that helmets may lead to an increased risk of mandibular fractures. Thus, the aim of this study was to examine the anatomic distribution of mandibular fractures in injured cyclists and to assess if helmet use influenced the fracture locations.
Data from a Norwegian Level 1 trauma center were collected in the Oslo University Hospital Trauma Registry over a 12-year period. Of 1543 injured cyclists, the electronic patient charts of 62 cyclists with fractures of the mandible were retrospectively evaluated in detail. Demographic data, helmet use, and fracture type were assessed.
Sixty-two patients (4%) had fractures of the mandible, and women had an increased risk (OR 2.49, 95% CI 1.49-4.16, p < .001). The most common fracture site was the mandibular body, followed by the condyle. Isolated mandibular fractures occurred in 45% of the patients and 55% had other concomitant facial fractures. There were 42% of the patients with fractures in multiple sites of the mandible, and 42% had a concomitant dentoalveolar injury. Half of the cyclists were wearing a helmet at the time of the accident and 39% were not. There was no significant difference in fracture distribution between the helmeted and non-helmeted groups.
Fracture of the mandibular body was the most prevalent mandibular fracture type following bicycle accidents. Women had an increased risk of mandibular fractures compared with men, whereas helmet wearing did not affect the anatomical fracture site.
背景/目的：下颌骨构成了下面部的重要部分，容易受伤。即使在戴头盔的自行车运动员中，事故也可能导致下颌骨骨折，因为传统头盔对面部下部的保护作用很小。此外，一些研究表明，头盔可能会增加下颌骨骨折的风险。因此，本研究旨在检查受伤自行车运动员下颌骨骨折的解剖分布，并评估头盔使用是否影响骨折部位。
在奥斯陆大学医院创伤登记处，对 12 年来挪威 1 级创伤中心的数据进行了收集。在 1543 名受伤的自行车运动员中，对 62 名下颌骨骨折的自行车运动员的电子病历进行了回顾性详细评估。评估了人口统计学数据、头盔使用情况和骨折类型。
62 名患者（4%）有下颌骨骨折，女性风险增加（OR 2.49，95%CI 1.49-4.16，p < 0.001）。最常见的骨折部位是下颌骨体，其次是下颌骨髁突。孤立性下颌骨骨折发生在 45%的患者中，55%的患者有其他伴随的面部骨折。42%的患者有多处下颌骨骨折，42%的患者有牙牙槽损伤。事故发生时，有一半的自行车运动员戴着头盔，39%的人没有戴头盔。头盔佩戴组和非头盔佩戴组的骨折分布无显著差异。
下颌骨体骨折是自行车事故后最常见的下颌骨骨折类型。与男性相比，女性下颌骨骨折的风险增加，而头盔佩戴与否并不影响骨折的解剖部位。
