[Three-dimension CT assisted treatment of nasal fracture]

Objective:To investigate the diagnosis and evaluation methods of nasal bone fractures after nasal trauma, and the guiding significance of three-dimensional CT imaging technology for its treatment. Method:A total of 255 patients with nasal bone fractures were randomly selected from our hospital. All patients underwent CT scan of the nasal bones and reconstructed on a computer system. The reconstructed CT images were observed, measured and evaluated. Analyze the morphological characteristics of nasal bone fractures and evaluate the involvement of other facial structures. Result:Among 255 patients with nasal trauma, there were traumatic nasal bone fractures, including 71 cases（27.8%） with simple nasal bone fractures, 143 cases（56.1%） with traumatic nasal septum deviation, and 41 cases（16.1%） with other fractures. External nasal fracture classification: type Ⅰ（unilateral nasal bone or maxillary frontal fracture） 91 cases（35.7%）， type Ⅱ（bilateral nasal bone or fracture） 21 cases（8.2%），type Ⅲ（with trauma Nasal septum deviation） 143 cases（56.1%）. A total of 214 patients（83.9%） underwent surgical treatment, and underwent nasal endoscopic reduction of nasal bone fractures under local anesthesia, and 77 patients（30.2%） underwent nasal septum surgery. Conclusion:CT three-dimensional imaging technology can clearly display the location of the nasal bone fracture, the shape of the fracture line, the number of fragments formed by the fracture, and quantitative analysis of the deformity caused by it, which plays an important role in its diagnosis and treatment.