Department of Plastic and Reconstructive Surgery, Shizuoka Cancer Center, Shizuoka, Japan.
J Plast Surg Hand Surg. 2021 Feb;55(1):21-24. doi: 10.1080/2000656X.2020.1828896. Epub 2020 Oct 5.
Appropriate positioning of the inframammary fold (IMF) is essential for breast reconstruction. The purpose of this study was to quantitatively measure and evaluate the anthropometric position of the IMF in the thorax. A total of 145 Japanese women with unilateral breast cancer were analyzed. To indicate the superior-inferior position of the IMF on the non-diseased side, the distances from the sternal notch (SN) to the IMF along the midline (SN-IMFM) and from the SN to the umbilicus (UB) (SN-UB) were measured. A new index, the thorax anthropometric position (TAP) index for the IMF, was then defined as the ratio of SN-IMFM to SN-UB. The TAP index was calculated for each patient, and its correlations with demographic parameters, including age, body height, and body mass index, were statistically assessed. The TAP index was normally distributed and ranged from 0.500 to 0.704, with a mean of 0.590. Multivariate analysis revealed that age was an independent factor associated with a higher TAP index ( < .01). In addition, the paired -test showed that the TAP index was significantly greater in the standing position than in the supine position ( < .001). The position of the IMF in the thorax could be objectively described by the TAP index, and it was suggested to become inferior with age and the standing position. The index, along with these findings, will provide useful information for the evaluation of the breast contour in an objective and simple manner.
乳房下皱襞（IMF）的适当定位对于乳房重建至关重要。本研究的目的是定量测量和评估胸部 IMF 的人体测量位置。共分析了 145 名单侧乳腺癌的日本女性。为了表示 IMF 在非患病侧的上下位置，测量了胸骨切迹（SN）到 IMF 沿中线的距离（SN-IMFM）和 SN 到脐（UB）的距离（SN-UB）。然后定义了一个新的 IMF 胸部人体测量位置（TAP）指数，即 SN-IMFM 与 SN-UB 的比值。为每位患者计算 TAP 指数，并对其与年龄、身高和体重指数等人口统计学参数的相关性进行统计学评估。TAP 指数呈正态分布，范围为 0.500 至 0.704，平均值为 0.590。多变量分析显示年龄是与较高 TAP 指数相关的独立因素（<0.01）。此外，配对 t 检验显示 TAP 指数在站立位时明显大于仰卧位（<0.001）。TAP 指数可客观描述胸部 IMF 的位置，并且随着年龄和站立位的增加，IMF 的位置趋于下方。该指数及其发现将为以客观和简单的方式评估乳房轮廓提供有用的信息。
