Methods The operations of angle-splitting ostectomy have been performed on 13 patients (11 female, 2 male) who had large, squarish, or broad face with eversion mandibular angle.

• 方法 对下面部宽大，下颌骨体肥厚，下颌角外翻明显的“四方脸”者(13例，其中男性2例，女性11例)进行了下颌骨体部的劈裂截骨术和部分咬肌去除术。