摘要目的 探讨一种提供稳定支撑的口内入路颧骨截骨降低术的新方法.方法 根据颧骨颧弓复合体及咀嚼肌的解剖学特点,设计前后支撑的颧骨颧弓截骨术,包括颧骨体部的L形截骨术和颧弓根部的斜形截骨术,参考颧骨颧弓突出程度,整体适度向内、向上推移,于颧骨体部形成第1支撑、颧弓根部形成第2支撑的前后双支撑结构,达到颧骨颧弓降低的效果.结果 2015年1月至2017年1月,应用双支撑颧骨截骨降低手术方法治疗颧骨高突患者76例,随访10～12个月,均获得满意疗效,未发生骨不连等并发症.结论 双支撑颧骨截骨降低术矫正颧骨高突畸形,可以有效地降低颧骨颧弓高度,预防骨不连、面部软组织松垂等并发症,是一种比较理想的手术方法.

abstractsObjective To present a new method for correction of prominent malar complex via intraoral approach by double support technique osteotomy which can provide a stable support. Methods According to the anatomical characteristics of malar complex and relevant masseter muscle, we designed a malar reduction technique including anterior and posterior support. The reduction procedure entailed an L-shaped osteotomy ofthemalarbody and oblique osteotomy of malar arch. On the basis of prominence degree, bone fragment was moved inward and upward to form double support, which could reduce malar and zygomatic arch effectively. Results A total of 76 patients subjected to double support technique for malar reduction between January 2015 and January 2017 were retrospectively reviewed. The follow-up period ranged from 10 to 12 months. All patients were satisfied with aesthetic outcomes without major complications, such as facial nerve damage or bone ununion. Conclusions Double support technique is an effective method to correct malar prominence andreduce the zygomatic complex which can prevent saggy cheek and bony malunion.