长期冷冻脂肪的移植

Long-term frozen fat transplantation

目的自从脂肪抽吸术出现以来,脂肪移植便获得了广泛应用。对自体胶原和脂肪增加法进行了研究,并取得了良好效果。主张用冷冻脂肪而不用抽吸法进行反复注射。方法自1989年以来,有54例患者接受了胶原和脂肪注射。36例患者随后又接受了冷冻脂肪治疗。19例患者接受了一次注射,9例患者接受了3次注射,8例患者接受了3次以上注射。脂肪贮藏于-70℃冷冻箱中,重复注射的时间间隔为2个月至7年。结果虽然在前6周有30%～70%的再吸收,但这与新鲜脂肪的再吸收率并无差别。长期保留的脂肪已冷冻达7年之久。

Objective Fat grafting has gained in popularity since the advent of liposuction. The authors have tried autocollagen and fat augmentation with good results. For repeated injections, using frozen fat rather than repeated harvesting is advocated. Methods Since 1989, 54 patients have received injections of collagen and fat. Thirty-six patients were later treated with frozen fat; 19 patients had one injection, 9 had three injections, and 8 had 3 or more injections. Fat was stored in a freezer at -70℃ and reinjected at intervals ranging from 2 months to 7 years. Results Although there was a reabsorption rate of 30% to 70% in the first 6 weeks, this did not differ from the reabsorption rate for fresh fat. There was long-term retention of fat that had been frozen for up to 7 years. Conclusion Fat frozen for up to 7 years can be used for reinjection.