目前用于整复部分或全鼻缺损的技术有多种,但存在以下问题:①需行二次或多次手术,②供区瘢痕明显可见,有时需作植皮消除创面,③皮肤颜色、质地和厚度不十分相宜。为了克服以上缺点,作者设计并实施逆行口角瓣(retro angular flap)进行一期鼻缺损修复。 解剖研究表明,面动脉通过其穿支供应面部大部分皮肤,其主要分支为颏下动脉,下唇动脉和上唇动脉,终末段即口角动脉,沿鼻外侧走行,止于内眦附近,与对侧角动脉和眶上动脉构成吻合。考虑到终末吻合支的特殊性和血供分布,作者探讨了以角动脉为蒂,血 Currently used to restore part or all of the nasal defect in a variety of techniques, but there are the following problems: ① need to perform two or more surgeries, ② scar visible for the area, and sometimes need to make the skin graft to eliminate the wound, ③ skin color, texture And the thickness is not very affordable. To overcome these shortcomings, the authors designed and implemented a retrograde retro angular flap for primary nasal defect repair. Anatomical studies have shown that the facial artery supplies most of the facial skin through its perforator. The main branches of the facial artery are the submental artery, the lower lip artery and the upper lip artery. The terminal segment, ie, the dorsal horn artery, runs along the lateral direction of the nasal cavity, The contralateral angle artery and the supraorbital artery constitute anastomosis. Taking into account the specificity of the anastomosis and the distribution of blood supply, the author explored the angle of the pedicle, blood