先天性小耳畸形乳突区扩张皮肤血管分型及其临床意义

Clinical significance of vascular distribution type of the expanded skin in the mastoid region in congenital microtia

目的 对先天性小耳畸形乳突区扩张皮肤血管分布情况进行分型，并依据分型进行扩张皮瓣设计，为充分、合理、安全利用扩张皮肤再造耳廓提供指导。方法 在暗室内行乳突区完成皮肤扩张后的透光实验，观察扩张皮肤的血管分布情况，并依此设计不同长宽比例的扩张皮瓣。结果 根据血管分布情况，将403例扩张皮肤初步分为5种类型，并依此设计不同的扩张皮瓣，无一例发生皮瓣末端血运障碍。结论 乳突区扩张皮肤血管分布的临床研究，可为耳廓再造术耳后扩张皮瓣的设计提供指导。

Objective To classify the blood vessel distribution of the expanded skin in the mastoid region and its relevance to reasonable and reliable design of the expanded flap for auricular reconstruction in congenital microtia. Methods The blood vessel distribution of the expanded skin in the mastoid region was observed by light permeation test. The expanded flaps with different ratio of length to width were designed according to their blood vessel distribution types. Results The vascular distribution of the expanded skin in 403 cases was divided into five types. All the flaps survived completely. Conclusions The blood vessel distribution type of the expanded skin in mastoid region has great significance for the design of post-auricular expanded flap in auricular reconstruction.