目的探索治疗下颌角肥大的一种新型截骨术。方法我们根据下颌骨解剖结构及中国人的审美观对传统手术方法作了两点改进。一是一次性下颌角弧形截骨;二是不切除咬肌。手术操作由口内入路直视下完成。结果 1996年12月～1997年12月共完成38例手术,随访3～12个月,均取得良好的美容效果。结论本法设计合理、操作简单、并发症少,更适合国人的审美观。 Objective To explore a new type of osteotomy for the treatment of mandibular angle hypertrophy. Methods Based on the anatomy of the mandible and Chinese aesthetics, we made two improvements to traditional surgical methods. First, a one-time mandibular angle arc osteotomy; the second is not removed masseter. Surgical operation is performed under the direct view of the mouth. Results From December 1996 to December 1997, a total of 38 operations were performed. The patients were followed up for 3 to 12 months and achieved good cosmetic results. Conclusion This method is reasonable in design, simple in operation and less in complication, which is more suitable for the aesthetic judgment of Chinese people.