Xu Meibang, Chan Fuan Chiang, Jin Xiaolei, Xu Jiajie, Lu Jianjian, Zhang Chao, Teng Li
From the *Craniomaxillofacial Surgery Department 2, Plastic Surgery Hospital of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China; and †Department of Plastic and Reconstructive Surgery, Temple Street Children's University Hospital, Temple Street, Dublin 1, Ireland.
J Craniofac Surg. 2014 Mar;25(2):355-8. doi: 10.1097/01.scs.0000436673.77122.00.
Hemimandibular hyperplasia (HH) is a developmental asymmetry characterized by three-dimensional enlargement of one half of the mandible. The hyperplastic side usually involves the condyle, condylar neck, ramus, and body, with the anomaly terminating abruptly at the symphysis. The malformation results in the clinical presentation of ipsilateral enlargement of the mandible and tilted occlusal plane, associated with a deviated chin to the contralateral side. Since the first case report of HH in the English literature in 1836, various terminology and classifications were used. In this study, the authors classified the patients into typical and atypical types of HH on the basis of clinical and radiologic observations in an effort to achieve a simplified and efficient surgical management on the basis of the severity of deformity. Accordingly, surgical treatments are designed respectively on the basis of the authors' classification and treatment algorithm. In addition, in view of potential complications arising from condylectomy, none of the patients had undergone condylectomy as part of the surgical treatment. The authors present their experience on the basis of this proposed classification and treatment algorithm with functional and aesthetic outcomes as the end points of this study.
半侧下颌骨增生（HH）是一种发育性不对称疾病，其特征为下颌骨的一侧出现三维扩大。增生侧通常累及髁突、髁突颈部、升支和体部，畸形在正中联合处突然终止。这种畸形导致下颌骨同侧肿大和咬合平面倾斜的临床表现，并伴有下巴向对侧偏斜。自1836年英文文献首次报道HH病例以来，人们使用了各种术语和分类方法。在本研究中，作者根据临床和影像学观察结果将患者分为典型和非典型HH类型，以便根据畸形的严重程度实现简化且有效的手术治疗。因此，手术治疗分别根据作者的分类和治疗方案进行设计。此外，鉴于髁突切除术可能引发的并发症，没有患者接受髁突切除术作为手术治疗的一部分。作者基于这一提出的分类和治疗方案介绍了他们的经验，本研究以功能和美学效果作为终点。
