Nakamura M, Ikeda T, Shioya N
Kitasato University, Department of Plastic Surgery, Kanagawa, Japan.
Aesthetic Plast Surg. 1995 Nov-Dec;19(6):561-5. doi: 10.1007/BF00454323.
Side-to-side earlobe variations, based on the size of the earlobe surface area and a classification into earlobe types, were quantitatively analyzed in 58 female students, ranging from 20 to 22 years old. Using a new earlobe measurement technique, a closed-circuit outline of each ear was directly traced onto a clear polyethylene sheet, after which the surface area of the earlobe portion of each ear was identified, measured by a digital planimeter, and analyzed. Results revealed that side-to-side differences in the size of the earlobe surface area existed in all subjects. In contrast, based on classifying the earlobe shape into three types (i.e., tapering, square, or pendulous), differences in the mean earlobe surface area value among the three types were not significant. However, when the classification of the earlobe shape was reduced to only two types (pendulous or nonpendulous), the mean earlobe surface area value between the two types was highly significant. These results thus suggest that for a quantitative analysis of earlobe variations, classification of the earlobe shape into two types rather than into three types is the better method. This method makes it easy to distinguish earlobe differences. Further, if the earlobe differences are noted before ear piercing, a balanced ear piercing effect can be achieved.
对58名年龄在20至22岁之间的女学生的耳垂左右差异进行了定量分析，该差异基于耳垂表面积大小并分为不同耳垂类型。使用一种新的耳垂测量技术，将每只耳朵的闭合轮廓直接描绘在一张透明的聚乙烯片上，然后确定每只耳朵耳垂部分的表面积，用数字平面仪进行测量并分析。结果显示，所有受试者的耳垂表面积大小均存在左右差异。相比之下，将耳垂形状分为三种类型（即渐细型、方形或悬垂型）时，三种类型之间的平均耳垂表面积值差异不显著。然而，当将耳垂形状分类简化为仅两种类型（悬垂型或非悬垂型）时，两种类型之间的平均耳垂表面积值差异非常显著。因此，这些结果表明，对于耳垂差异的定量分析，将耳垂形状分为两种类型而非三种类型是更好的方法。这种方法便于区分耳垂差异。此外，如果在穿耳洞之前注意到耳垂差异，就可以实现平衡的穿耳洞效果。
