Analysis of the Volume of the Liposuction-Derived Adipose Tissue in Clinical Application.

[INTRODUCTION] The strategy of adipose component transplantation has been proposed and widely used in both reconstructive and aesthetic surgery. However, there is no uniform standard for the preparation of component fat, and the volume calculation of liposuction and injection in clinical applications is mostly based on experience. This study aims to analyze the volume of component fat obtained during clinical series.

[METHODS] Patients undergoing abdominal or thigh liposuction and autologous component fat grafting from September 2020 to October 2024 were included. The high-density fat was harvested from the inferior one-third layer of the standard Coleman fat. The SVF-gel was obtained by mechanical emulsification and centrifugation of the oil layer and upper two-third layer of adipose tissue. Correlation analysis was conducted between the volume of SVF-gel and patient characteristics.

[RESULTS] Sixty-five with an average age of 33.9 years were included. For breast augmentation, the volume of prepared high-density fat and SVF-gel were 331.7±70.8 and 60.3±13.1 mL, with the proportion of SVF in fat aspirated amounting to 6.4%±1.9%. For the treatment of temporal depression, the volume of prepared high-density fat and SVF-gel were 48.3±27.3 and 14.5±8.6 mL, respectively, with the proportion of SVF in fat aspirated amounting to 10.3%±2.0%. There was a significant difference between the proportion of SVF-gel in low-density fat and aspirated fat obtained from the abdomen and thigh.

[CONCLUSION] There is a significant negative correlation between the obtained SVF-gel proportion with BMI and the amount of fat aspirated. For the preparation of a large amount of SVF-gel, especially for individuals with high levels of BMI, the total volume of fat aspirated would be much higher.

[LEVEL OF EVIDENCE] Level IV.