Abstract:

Objective　To investigate morphological characteristics of unilateral cleft lip nasal deformity，and provide a theoretical basis for the surgery. 　Methods　Structural changes in lip and nose of 60 children with unilateral cleft lip nasal deformity were observed. The upper lip area and the main line were measured and analyzed.　Results　The area of philtrum and lateral lip，the distance from labrum peak to angle of mouth and the angle of vermilion border were less than those of normal side（P＜0.05）; The distance from nasal tip to nasal floor and the columella skewness in cased of Ⅲ degree were larger than that in cases of Ⅱ degree（P＜0.05），as well the labrum peak shift，but the difference was not statistically significant （P＞0.05）.　Conclusions　For cases of unilateral cleft lip nasal deformity, morphological differences between Ⅱ degree  and Ⅲ degree, healthy side and abnormal side are significant, which have to be dealt during surgical treating process.

Key words: Unilateral cleft lip nasal deformity, Morphological characteristics, Operational design