局麻下口内入路下颌角肥大截骨术

目的　探索一种简便，安全，有效的下颌角肥大截骨术。方法　将下颌角肥大根据情况分为外翻型、后下突出型和复合型，在局部神经阻滞加局部浸润麻醉下，经口内入路分别采用去薄、弧形截骨和联合截骨的方式治疗162例，对咬肌肥大者同时去除咬肌75例，对脸颊丰满者同时去除颊脂垫52例。结果　对60例进行3～12个月随访，满意率为94.3％。结论　本法操作简易，截骨方式方便，对病人全身影响小，并发症少，恢复快。符合美容手术原则。

Intraoral osteotomy for hypertrophied mandibular angle with local anesthesia

Objective　To search a simple, safe and effective osteotomy for hypertrophied mandibular angle.Methods　Hypertrophied mandibular angles were classified as lateral bulge, posteroinferior projection and combination based on their appearances. With local nerve blocking and infiltrating anesthesia, 162 cases with hypertrophied mandibular angel were respectively operated by intraoral approach with sagittal split, curved or combinative osteotomy method according to their types. Hypertrophied masseters were partially resected simutaneouly in 75 cases combined with masseter hypertrophy, and buccal fat pads were extracted in 52 cases associated with round faces.Results　Postoperative follow-up of 3～12 months to 60 cases of them showed 94.3 % of them were satisfactory.Conclusion　This operative method is simple and safe.It has minimal influence on the overall body of patients, and it is accord with the rules of aesthetic surgery.