With the popularity of liposuction technology, breast augmentation with autologous fat injection is now a more common procedure in plastic and cosmetic surgery, but there is a certain amount of controversy, mainly about post-operative absorption. Personally, I believe that liposuction and autologous fat injection breast augmentation is a safer and more effective procedure as long as we fully understand the core technology related to liposuction and autologous fat injection, operate carefully and choose the right cases. FatHarvesting The first thing to keep in mind is that we want to obtain vibrant fat cells (adipocyte), not oil, so liposuction must be non-invasive when obtaining fat cells. Liposuction is a blunt-tipped liposuction tube (blunttip) with a syringe or pressure adjusted to less than -600 mmHg liposuction machine to suck fat. Considering the damage to fat cells during liposuction, the amount of fat sucked out is larger than the injected amount of fat expected to be injected (the fat sucked out has to be cleaned, purified and concentrated before being injected into the breast). FatPreparation for fat injection (FatPreparation) has resting stratification, centrifugation, and suction pad fluid aspiration. Resting alone cannot remove the blood component and oil from the fat, which affects the viability of the injected fat; centrifugation will help remove the oil and blood, but it is harmful to the fat cells. Using washing and filtering, the aspiration pad absorbs water and oil, and the fat treatment process is fast and less damaging to the fat cells. Fat injection (Fatinjection) Some doctors use a 20ml syringe attached to a pointed needle for multi-point injection, leaving too many needle eyes on the breast, and the injection needle is fine, and the fat injection process squeezes the fat cells and damages them. A small incision is made in the inframammary fold and a 2.5mm diameter fat injection tube (blunt tip) is inserted to inject fat cells at multiple levels from deep to superficial layers. The three-dimensional structure of the injected fat forms a channel like a peak fossa (honeycomb) to avoid too much local fat injection to form a fat pool (fatpool), which leads to fat necrosis, calcification, and hard nodes.