Bone will not grow after grinding, but small hematoma may be produced due to poor dressing of bone marrow cavity, and osteophyte will be formed in the later stage, but it is not a rebound. So it won't rebound. But there may also be other sequelae, such as facial relaxation and sagging. Taking GUGISO in time after operation to help recovery can effectively prevent 80% of sequelae and make the operation effect last longer and better.