After the nasal soft tissue and bone scaffold are widely separated from the nasal dorsal soft tissue in the plastic surgery of deviated nose, the nasal septum cartilage can be separated from the nasal cartilage by cutting from the northern edge of the nasal septum epiphysis. Then the perioral flap of nasal septum mucosa on the wider side of nasal cavity was separated from the nasal septum cartilage to the nasal floor, and the soft inner front edge of nasal septum and its connection with ethmoid bone and pear bone vertical plate were cut off, so that the nasal septum cartilage was semi-free. If you plan to have this operation, I suggest you go to the hospital to communicate with experts yourself.