2013 年 12 巻 4 号 p. 471-480
Plastic surgeons create of external noses based on their kansei. The outcome of the rhinoplasty depends on the surgeons' technique and artistic sense. We consider that reconstructing an external nose by using a template would solve the inconsistency of the outcome. However, there are few studies about curves of outlines of external noses. Thus, the aims of our study were to analyze curves of outlines of external noses of 84 normal subjects and to classify the curves in order to create templates as a guide for total nasal reconstruction. Concretely, we took photographs of 84 subjects' external noses and abstracted the curves of their profile outlines of external noses from the photographs by image processing. Next, we analyzed characteristics of the curves by using those profiles of curvature and classified the curves into 5 types of curves. Lastly we made innovative 380 (= 5 types × 76 sizes) nose templates based on our study in order to express the individual subtle differences of the reconstructed new nose.