目的 探讨无脊髓神经损伤伴有大骨块突入椎管的胸腰椎爆裂骨折后路间接减压与椎弓根固定技术的应用价值。方法 对42例无脊髓神经损伤伴有大骨块突入椎管的胸腰椎爆裂骨折患者行椎弓根螺钉内固定及后路间接减压术,未进行椎板切除,伤椎上下椎体与伤椎同时植钉进行撑开间接减压,术后随访观察伤椎椎体高度的恢复,节段后凸角的纠正,椎管内骨块复位情况以及有无神经损伤症状。结果 42例患者均获随访,术后平均随访30个月。间接减压患者伤椎前后缘高度分别是:术前53.8%、82.3%,术后91.7%、95.3%;节段后凸角分别是:术前27.1°,术后5.3°;椎管截面积术前平均51.2%,术后83.7％;术后各项指标与术前相比有差异(P＜0.01)。患者术后随访均无迟发性神经损伤发生。结论 对于椎管内骨块占位但无脊髓及神经损伤的胸腰椎爆裂骨折行后路间接减压椎弓根钉内固定可以达到良好的治疗效果。

Objective To investigate the effectiveness of posterior indirect decompression and internal fixation with pedicle screws in treating thoraclumbar burst fracture without spinal cord or nerve damage accompanied with Large bone protruding into the spinal canal. Methods 42 cases were treated with pedicle screw fixation and kept the lamina. Pedicle screws were inserted into injury vertebra and adjacent centrums, and braced them for indirect decompression at the same time. To observe the recovery of injured vertebral height, the correction of segmental kyphosis angle, the restoration of protruding bone fragment and presence of nerve injury symptoms. Results After the operation, the patients were followed up for average 30 months, by comparing indexes between preoperation and postoperation, indirect decompression patient's anterior and posterior flange height of vertebral body was 53.8% and 82.3% vs 91.7% and 95.3%, and the segmental kyphosis angle was 27.1° vs 5.3°, and the cross-sectional area of spinal canal was 51.2% vs 83.7% on average. There was a significant difference between the indexes of before and after the operation. In postoperation follow-up, no patient had delayed neurological damage. Conclusion Pedicle screw internal fixation with indirection decompression is an effective method to treat thoraclumbar burst fracture,with bone fragments in spinal canal and without nervous dysfunction.

目的 探讨胸腰椎爆裂性骨折(TLBF)应用经伤椎椎弓根钉固定结合经椎弓根植骨治疗的临床效果。方法 选取我院2013年7月—2016年7月收治的28例TLBF患者,均行经伤椎椎弓根钉固定结合经椎弓根植骨治疗。详细记录所有患者术中出血量、手术时间及住院时间等围术期情况;比较28例患者手术前后影像学指标、腰背部疼痛视觉模拟评分法(VAS)评分及Frankel分级;随访期间并发症情况。结果 与术前相比,28例患者术后1个月、3个月时的椎体前后缘高度、Cobb角及VAS评分,均更优(P<0.01);经Ridit分析知,28例患者术后6个月时Frankel分级显著优于术前(P<0.01);术后随访6个月期间内,未见内固定松动、断裂等情况,且并未发生因椎弓根植骨而引起的神经症状。结论 TLBF应用经伤椎椎弓根钉固定结合经椎弓根植骨治疗能有效复原与保持脊柱生物力学稳定性,矫正后凸畸形,减少患者术后痛苦与并发症,改善神经功能,安全可靠,具有较高临床推广价值。

Objective To investigate the effects of the pedicle screw fixation combined with pedicle bone graft in treatment of thoracolumbar burst fracture(TLBF). Methods Selected 28 patients with TLBF treated in our hospital from July, 2013 to July, 2016, all of whom were treated with the pedicle screw fixation combined with pedicle screw fixation in the treatment of vertebral pedicle screw fixation. Recorded all patients' detailed situations on preoperative period of bleeding volume, operation time and length of stays. Compared 28 patients' imaging parameters, back pain visual analogue scale (VAS) score and Frankel classification before and after operation. And to observe the complications during follow-up as well. Results Compared with the pre-operation, 28 patients' anterior and posterior margin height, Cobb angle and VAS score were significantly better (P<0.01) than that of one month and three months after the operation. According to the Ridit analysis, six months after the operation, 28 patients' Frankel classification was better than that of pre-operation (P<0.01). No internal fixation loosening or breakage was found during the follow-up period of 6 months, and there was no nerve symptoms caused by pedicle screw fixation. Conclusion The pedicle screw fixation combined with pedicle screw fixation in treatment of thoracolumbar burst fracture(TLBF) can effectively restore and maintain the biomechanical stability of the spine, correct kyphosis, reduce postoperative pain and complications, improve nerve function and be safe and reliable,have higher clinical value.