摘 要:　[目的] 探讨后路短节段椎弓根螺钉系统治疗胸腰段脊柱骨折-脱位的效果。[方法] 25例患者均于全身麻醉下行后路椎板减压、复位，短节段椎弓根螺钉内固定，植骨治疗。[结果] 所有病例随访8个月～4年，平均22个月。脊柱序列基本恢复正常。伤椎平均前后缘高度分别是：术前31.2%、76.8%，术后83.5%、92.6%； Cobb's角：术前32.5°，术后7.6°；椎管截面积术前平均36.5%,术后86.4%；各项指标与术前相比有显著差异（P<0.01）。神经功能恢复情况：2例完全截瘫无恢复，余按Frankel分级有1～3级恢复。1例断钉。[结论] 短节段椎弓根内固定具有手术操作简单安全、固定节段少、重建脊柱序列等优点，适于胸腰椎骨折－脱位的治疗。

[Abstract] Objective To study the efficacy of thoracolumbar spinal fracture-dislocation treated with posterior short-segment pedicle instrument. Methods Under general anaesthesia, 25 cases were treated by posterior route reduction and laminectomy and short-segment pedicle screw internal fixation and bone grafting. To appraise the efficacy through comparing the anterior and posterior height of fractured vertebrae, the Cobb's angle, the cross-section area of spinal canal, the spinal alinement and the nerve function between preoperative and postoperative. Result All cases were followed up. Length of follow-up ranged from 8to 48months. Spinal alinement was reduced normally. The average anterior and posterior height of fractured vertebrae was 31.2%、76.8% preoperatively, 83.5%、92.6%postoperatively; Cobb's angle was 32.5°preoperatively, 7.6°postoperatively. The cross-section area of spinal canal was 36.5% preoperatively, 86.4% postoperatively. There was significant deference between pre-operation and post-operation(P<0.01). Nerve recovery: 2 cases of complete paraplegia had no recovery, others recovered 1～3 grades by Frankel.1 case of broken pedicle screws occurred. Conclusion Short-segment pedicle instrument is suitable for treating thoracolumbar spinal fracture-dislocation, which has advantages of simplicity, safety and less segment fixed, reduced spinal alinement.