1. fat absorption: due to the lack of technical experience in fat transplantation, fat cells are destroyed during transplantation, and blood supply at the injection site is insufficient, which will lead to low survival rate.
2. Fat filling failure: due to serious technical skills, fat filling is excessive, leading to longevity; After absorption, the local filling is uneven, and fat necrosis produces a lump after local filling.
3. Dissatisfied with fat filling: dissatisfied with the effect of fat filling, unable to meet the expected requirements, or unsuitable for the shape and appearance after filling.