1. Take a supine position of 20 degrees and disinfect the skin.

2. Incision: Make an arc incision in the nasal vestibule on both sides of the nasal cavity and above the alar cartilage, and then insert a double-edged knife from the front of the alar cartilage to separate the soft tissue at the back of the nose from the nasal frame until it is above the nasal bone (). At this time, be careful not to damage the skin on the back of nose.

3. Cut off the front end of the diaphragm. Insert a blunt nasal septum knife from the left nasal vestibule incision to the opposite nasal vestibule incision, cut the nasal septum along the leading edge of the nasal septum cartilage, then fold it down and cut the nasal septum along the free edge.

4. Remove excess nasal cartilage. Use a stripper or scissors to separate the soft tissue connecting the nasal septum cartilage and the nasal cartilage. After seeing it clearly, cut off the crooked nasal cartilage and nasal septum cartilage first, then separate the contralateral nasal cartilage from the nasal septum cartilage, and cut off the extra nasal cartilage according to the specific situation, so that the two sides are roughly symmetrical. At this time, if there is abnormal hypertrophy in the anterior margin of septal cartilage, it can be appropriately removed ().

5. Peel off the mucosa of one nasal septum, and insert a stripper in the cut part of the nasal septum to separate the mucosa from the subchondral cartilage and the nasal septum cartilage. It is easier to separate with a sharp stripper at first, and then switch to a blunt one to avoid peeling the mucosa. The range of dissection can be determined according to the range of distortion, just like the general submucosal septum correction ().

6. Free the posterior edge of the nasal septum cartilage At this time, the upper edge, anterior edge and one side of the nasal septum cartilage have been separated from the surrounding tissues. Cartilage can be cut off at the position where the posterior edge is connected with the vertical plate of ethmoid bone, and sometimes a narrow cartilage should be cut off, so that there is enough reduction space and there is no overlap between the front and the back. When cutting cartilage, avoid cutting through the contralateral mucosa to avoid adverse consequences.

7. Cut the bottom of the diaphragm cartilage. The bottom of the cartilage of the nasal septum is connected with the vomer. You can use a narrow diaphragm chisel to gently cut the diaphragm cartilage and plow bone. You may encounter more bleeding, and you can stop the bleeding with adrenaline gauze. At this time, except the junction of the opposite side and the mucosa of the nasal septum (), the cartilage of the nasal septum has been separated from the surrounding tissues on four sides and one side. According to the distortion, the new wire is reset to the center and fixed.

8. Correct the deformation of the rest of the nasal septum, such as the vertical plate of ethmoid bone and the deformation of vomerous bone or ridge. , and according to the need to remove the deformed bone tissue or make appropriate corrections.

9. Suture incision The nasal vestibule and nasal septum incision should be aligned, and then sutured with silk thread.

10. The gauze in the nasal cavity blocked the external nose and fixed the nasal septum cartilage in the middle position to achieve the purpose of hemostasis. After external nose operation, the model was made with proofing glue and fixed by pressure.

(2) Orthopedic correction of bone distortion is complicated, including uplift, depression and distortion. Now, for example, the nose deformation caused by the collapse of nasal bone due to the failure to correct nasal trauma in time, the correction method is introduced below. Other distortions in different situations can be corrected according to the different lesions.

1. Half-lying position, skin disinfection.

2. Incision: make an arc incision on the sunken nasal vestibule and alar cartilage, and then insert a small scissors or a double-edged knife to separate the soft tissue on the nasal bone.

3. Saw off the collapsed nasal bone. Saw off both sides of the collapsed nasal bone with a nasal saw to make it move freely. This step can also be done with a nose chisel.

4. Use a crowbar to pry up the broken nasal bone in the nasal cavity, and fill the nasal cavity with iodoform gauze to prevent collapse.

5. The external fixation is molded with proofing glue and fixed outside the nose.