关键词: 原因分析, 胸腰椎骨折, 后凸畸形

Abstract: ［Abstract］ Objective To analyze the causes of kyphosis deformity after short?segment posterior pedicle screw fixation for thoracolumbar fracture. Methods A retrospective clinical study was donein 39 patients with thoracolumbar fractures who had kyphosis deformity after short?segment posterior pedicle screw fixation in our hospital from 2014 to 2018. Results In our data， many reasons led to kyphosis deformity after thoracolumbar fracture surgery. The kyphosis deformity in the early stage was mainly due to inappropriate surgical methods，and within one year mostly due to short fixed segment or screw， which could not support fixation effectively；no external fixation brace or external fixation was unreliable； the patient had osteoporosis and severe injury of intervertebral disc. Kyphosis after removal of internal fixation was mainly due to poor stability of fracture decompression and fixation without adequate bone graft fusion. Conclusion In the present study， the surgical treatment of thoracolumbar fractures depended on the correct diagnosis， appropriate surgical methods and effective bone graft fusion.

Key words: kyphosis, causes, fracture of thoracolumbar spine