Sirimaharaj Wimon, Pyungtanasup Kasemsak
Division of Plastic Surgery, Department of Surgery, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
J Med Assoc Thai. 2008 Jun;91(6):868-74.
Mandibular fractures constitute a substantial proportion of maxillo-facial trauma cases in Chiang Mai. The present study investigated the prevalence, sex, age group, alcohol consumption, crash helmet use, causes, site, treatment, and postoperative result of mandibular fractures at Chiang Mai University Hospital, Thailand.
The medical records and radiographs of 198 patients treated for mandibular fracture at Chiang Mai University Hospital over a 1.5 year period (from 1 January 2005 to 30 June 2006) were reviewed Data on the patients' age, sex, alcohol and helmet use, mechanism of injury, site of fracture, treatment modality, and post-operative result were recorded and assessed.
Men of 21 to 30 years of age sustained the most mandibular fractures. The ratio of males to females was 5:1. Most fractures were caused by motorcycle accidents (MCA) (75.75%), followed by body assault (13.63%), and falls (4.54%). Alcohol consumption was a contributing factor at the time of injury in 79% of fractures according to the information available. The most common fracture sites were, in descending order the parasymphysis (45.3%), angle (19.51%), condyle (15.68%), symphysis (13.24%), body (3.83%), and ramus (2.09%). Nearly 3/4 of all cases were treated by open reduction (76%).
The incidence and causes of mandibular fracture reflect trauma patterns within the community and can provide a guide to the design of programs geared toward prevention and treatment.
下颌骨骨折在清迈的颌面创伤病例中占很大比例。本研究调查了泰国清迈大学医院下颌骨骨折的患病率、性别、年龄组、饮酒情况、头盔使用情况、病因、骨折部位、治疗方法及术后结果。
回顾了清迈大学医院在1.5年期间（从2005年1月1日至2006年6月30日）治疗的198例下颌骨骨折患者的病历和X光片。记录并评估了患者的年龄、性别、饮酒和头盔使用情况、损伤机制、骨折部位、治疗方式及术后结果等数据。
21至30岁的男性下颌骨骨折最多。男女比例为5:1。大多数骨折由摩托车事故（75.75%）引起，其次是身体攻击（13.63%）和跌倒（4.54%）。根据现有信息，79%的骨折在受伤时饮酒是一个促成因素。最常见的骨折部位依次为：下颌骨联合处（45.3%）、下颌角（19.51%）、髁突（15.68%）、下颌正中联合（13.24%）、下颌体（3.83%）和下颌支（2.09%）。近3/4的病例采用切开复位治疗（76%）。
下颌骨骨折的发病率和病因反映了社区内的创伤模式，可为预防和治疗方案的设计提供指导。
