[摘要]目的：介绍一种治疗严重小颏畸形的有效方法。方法：采用口内切口行颏部双阶梯水平截骨前移并坚固内固定,以增加颏突度和颏长度,改善颏部形态。结果：2003年10月～2010年9月共治疗25例,术后患者颏部形态均得到明显改善，颏部平均前移12mm，重塑的颏部外形满意，随访6个月～4年，手术效果稳定，截骨区骨愈合良好，无明显并发症出现。结论：应用颏部双阶梯水平截骨前移术治疗严重小颏畸形,可明显改善颏部形态，协调面部轮廓比例关系，效果显著。

    [关键词]小颏畸形；水平截骨；双阶梯水平截骨

    [中图分类号]R782 [文献标识码]A [文章编号]1008-6455(2011)04-0567-03

    Genioplasty with two-step horizontal advancement osteotomy for severe microgenia

    LU Jian-jian,TENG Li,JIN Xiao-lei,XU Jia-jie,ZHANG Chao,ZHANG Bo,XU Mei-bang,XIE Fang,TIAN Tian

    (Cranio-Maxillo-Facial Surgery Department 2,Plastic Surgery Hospital,Peking Union Medical College,China Academy of Medical Sciences,Beijing 100144,China)

    Abstract:ObjectiveTo introduce an effective surgical technique for correction of severe microgenia.MethodsTwo parallel osteotomies were performed under mental foramen through intraoral muscous incision.The mobilized segments were advanced like two steps in order to increase protrusion and heights of the chin and fixed rigidly with miniplate. ResultsFrom Oct ......