Ouroboros椎间融合系统应用于腰椎滑脱症的临床疗效分析

摘要

Objective To evaluate the role of ouroboros spinal systern in reduction and fusion in posterior lumbar inter-body fusion(PLIF) for spondylolisthesis patients. Methods The clinical outcomes and radiological data was assessed in a series of 17 patients with spondy1olisthesis patients who underwent surgical treatment from June 2008 to July 2009.The study group consisted of 5 males and 12 females. Surgical procedure was modified,and the definitive reduction of the spondylolisthesis was made by Ouroboros spinal system augmented with pedicle screw instrumentation after decompressive laminectomy.The clinical outcomes were detmnined by Oswestry disability questionnaire and the radiographic evaluation including height of intervertebral disc,slipping degree,and slipping angle. Result All the 17 cases the slips were completely or partially reduced after surgeries. All cases of the slipping degree were reduced and the normal sagital plane alignment were restored. The radiographic data showed no obvious loss of the correction in a mean follow-up time of 15.6 months(range,13-24months).The fusion was successfully in 17 cases with a fusion rate of 100%.The Oswestry disability index(ODI) decreased on an average from 35.3±4.9 preoperatively to 10.6±4.4 postoperatively. Conclusion The application of ouroboros spinal system proved to be effect of fusion for spondylolisthesis in patients treated by lumbar interbody fusion through posterior approach,it is a effective and convenience method in clinical use.%　　目的评价Ouroboros椎间融合系统在腰椎滑脱症患者手术治疗中的临床疗效。方法回顾性分析2008年6月到2009年7月我院应用Ouroboros椎间融合系统和椎弓根螺钉内固定系统治疗17例腰椎滑脱症患者，男5例，女12例，对所有病例进行1~2年随访和影像学检查，对椎间隙高度、滑脱角、滑脱率、Oswestly功能障碍评分进行测量和评估，并观察术后椎间融合情况。结果17例腰椎滑脱症患者全部达到复位或基本复位。随访患者腰椎正侧位X线片显示椎间高度、复位无明显丢失，未出现椎弓根螺钉松动、断裂情况。腰椎CT显示椎间融合满意，末次随访融合率为100%。临床疗效：治愈13例、有效4例。结论采用充分减压，椎弓根螺钉内固定和Ouroboros椎间融合系统治疗腰椎滑脱症复位效果满意，临床症状改善明显，融合率高，疗效好。