后路经椎弓根内固定联合椎体成形术治疗老年人胸腰段脊椎骨折的疗效分析
후로경추궁근내고정연합추체성형술치료노년인흉요단척추골절적료효분석
Analysis of posterior pedicle screw fixation combined with vertebroplasty in the treatment of thoracolumbar vertebral fractures in elderly patients