Methods:Oberve the vertebral height,the change of intervertebral space and intervertebral fussion before and after thoracolumbar fractures operations using internal fixation with Harrington.

• 方法：观察胸腰椎骨折的术前、术后的椎体高度、椎间隙距离变化及椎体间融合情况，对49例不稳定性胸腰椎骨折进行固定治疗。