From the Department for Hand, Plastic, and Aesthetic Surgery, Ludwig Maximilian University; Ocean Clinic; private practice; the Department of Plastic Surgery, Lenox Hill Hospital; the Department of Anatomy and Department of Surgery, Division of Plastic Surgery, Mayo Clinic College of Medicine and Science, Mayo Clinic; Skin Associates of South Florida; and the Department of Medical Education, Albany Medical College.
Plast Reconstr Surg. 2019 Jul;144(1):83-92. doi: 10.1097/PRS.0000000000005707.
The deep intramuscular approach during buttock augmentation with fat grafting has been associated with a significantly increased risk for pulmonary fat embolism. This study was designed to provide guidance for injection into the subcutaneous fat.
The authors investigated 150 Caucasian individuals with an equal distribution of men and women (n = 75 each) and a balanced distribution of age (n = 30 per decade: 20 to 29, 30 to 39, 40 to 49, 50 to 59, and 60 to 69 years) and body mass index (n = 50 per group: ≤24.9 kg/m, between 25.0 and 29.9kg/m, and ≥30 kg/m). Ultrasound-based measurements were conducted of the thickness of the total, superficial, and deep gluteal fatty layers.
An increase in body mass index of 1.0 kg/m corresponded to an increase of 3 mm of the total gluteal subcutaneous fat of men and a 4-mm increase of the total gluteal subcutaneous fat in women. With increasing age, the thickness of the deep fatty layer increased, whereas with increasing body mass index the thickness of the superficial layer primarily increased. Formulas were generated to estimate the total thickness of the gluteal subcutaneous fatty layer for men [total thickness (in millimeters) = -33.56 + (age × 0.078) + (body mass index × 3.042)] and women [total thickness (in millimeters) = -56.997 + (age × 0.1) + (body mass index × 3.86)].
Knowing the total thickness of the gluteal subcutaneous fat (i.e., the safe space) allows surgeons to estimate their operating range for cannula motion even if no ultrasound machine is available during buttock augmentation with fat grafting. This can increase safety, potentially reducing the number of adverse events.
在臀部脂肪移植隆臀术中，采用深层肌内注射法会显著增加肺脂肪栓塞的风险。本研究旨在为皮下脂肪注射提供指导。
作者对 150 名白种人（男女各 75 名，各占 50%）进行了研究，年龄分布均衡（每 10 年为一组：20-29 岁、30-39 岁、40-49 岁、50-59 岁和 60-69 岁），体重指数（BMI）分布均衡（每组 50 人：≤24.9kg/m、25.0-29.9kg/m 和≥30kg/m）。采用超声测量总、浅层和深层臀肌脂肪层的厚度。
BMI 增加 1.0kg/m，男性总臀皮下脂肪增加 3mm，女性总臀皮下脂肪增加 4mm。随着年龄的增长，深层脂肪层的厚度增加，而随着 BMI 的增加，浅层脂肪层的厚度主要增加。为男性生成了估计臀下脂肪总厚度的公式[总厚度（mm）=-33.56+（年龄×0.078）+（BMI×3.042)]和女性[总厚度（mm）=-56.997+（年龄×0.1）+（BMI×3.86)]。
了解臀下脂肪的总厚度（即安全空间），即使在脂肪移植隆臀术中没有超声机，外科医生也可以估计其套管移动的操作范围。这可以提高安全性，潜在地减少不良事件的发生。
