The Institute of Reconstructive Plastic Surgery, New York University Medical Center New York, NY 10017, USA.
J Plast Reconstr Aesthet Surg. 2010 Feb;63(2):346-53. doi: 10.1016/j.bjps.2008.11.023. Epub 2008 Dec 16.
Bottoming out is a well-known phenomenon described with reduction mammaplasty (RM). To date, the evaluation of post-operative bottoming out remains an imprecise science. The following study reports the application of three-dimensional (3D) photography to objectively investigate changes in breast morphology.
Patients undergoing medial pedicle RM had 3D photographs (Konica Minolta V910) taken during the early and late post-operative period (early=60-120 days; late=400-500 days). 3D images were compared and bottoming out was assessed with 3D parameters and vectors including total breast volume, volumetric tissue distribution above and below the Central (C) plane, distance of the C-plane to the lowest point of the breast, and maximum anterior-posterior projection from the chest wall.
Post-operative images from 15 consecutive RM patients showed an average volume of 556+/-144 cm3 (early) and 441+/-183 cm3 (late). The percent of tissue in the upper pole of the breast changed from the early to late post-operative period (76% vs. 69%, respectively; p<0.01). The distance from a fixed C-plane to the inferior pole significantly increased (42+/-15 mm early vs. 51+/-18 mm late; p<0.01). AP projection decreased by an average of 6.23 mm (p<0.01). The lateral border of the IMF significantly dropped by 6.27 mm.
This study objectively describes both the occurrence of bottoming out and the quantitative amount in terms of changes in volumetric distribution, surface topography and breast projection. With 3D photography, plastic surgeons can perform objective evaluation of breast transformation over time, which ultimately will aid in planning to allow for better surgical outcomes.
“Bottoming out”是一种众所周知的现象,在缩胸手术(RM)中有所描述。迄今为止,术后“Bottoming out”的评估仍然是一门不精确的科学。本研究报告了三维(3D)摄影在客观研究乳房形态变化中的应用。
接受内侧蒂 RM 的患者在术后早期(60-120 天)和晚期(400-500 天)接受 3D 摄影(柯尼卡美能达 V910)。比较 3D 图像,并通过 3D 参数和向量评估“Bottoming out”,包括总乳房体积、中央(C)平面上下的体积组织分布、C 平面到乳房最低点的距离以及胸壁前后最大投影。
15 例连续 RM 患者的术后图像显示平均体积为 556+/-144cm3(早期)和 441+/-183cm3(晚期)。乳房上极组织的百分比从术后早期到晚期发生变化(分别为 76%和 69%;p<0.01)。从固定 C 平面到下极的距离显著增加(早期为 42+/-15mm,晚期为 51+/-18mm;p<0.01)。AP 投影平均减少 6.23mm(p<0.01)。IMF 的外侧边界显著下降了 6.27mm。
本研究客观描述了“Bottoming out”的发生以及在体积分布、表面形貌和乳房投影变化方面的定量变化。通过 3D 摄影,整形外科医生可以对乳房随时间的变化进行客观评估,这最终将有助于计划,以获得更好的手术效果。