• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Neurosurgical focus >Screw loosening in the Dynesys stabilization system: radiographic evidence and effect on outcomes.
【24h】

Screw loosening in the Dynesys stabilization system: radiographic evidence and effect on outcomes.

机译：Dynesys稳定系统中的螺钉松动：射线照相证据和对结果的影响。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Dynamic stabilization systems are used to stabilize degenerative lumbar spondylosis. Loosening of the pedicle screws in such nonfusion implants is predictable. This retrospective study evaluated the incidence of screw loosening and its effect on clinical outcomes. Charts, radiographic films, and medical records of 71 consecutive patients who underwent decompression using Dynesys dynamic stabilization for 1- or 2-level lumbar spondylosis were reviewed. Radiographic films were evaluated and compared to detect screw loosening. A visual analog scale (VAS) for back pain and the Oswestry Disability Index (ODI) were used for measuring clinical outcome. Statistical analysis was conducted using the chi-square test and Student t-test. The 71 patients in the study sample had a mean age of 59.2 +/- 11.65 years (range 23-80 years), with slight female predominance (39 women, 32 men). The mean follow-up duration was 16.6 months (range 8-29 months). There were loose screws in 14 of 71 patients (19.7%), for a rate of 4.6% per screw (17 of 368 screws). Most screw loosening occurred in patients >/= 55 years old (13 of 14 patients) although age and sex had no effect on screw loosening (p = 0.233 and 0.109, respectively). Both the loose screw and solid screw groups experienced significant improvement after the surgery in VAS and ODI scores. On the VAS, scores improved from 5.9 +/- 2.99 to 2.1 +/- 2.14 in the loose screw group (p = 0.003), and from 5.7 +/- 3.45 to 2.9 +/- 2.68 in the solid screw group (p < 0.001). For the ODI scale, scores improved from 43.5 +/- 16.78% to 28.0 +/- 18.18% (p = 0.006) in the loose screw group, and from 52.1 +/- 20.92% to 24.6 +/- 19.78% (p < 0.001) in the solid screw group. There were no significant differences between the 2 groups (p = 0.334 for VAS, p = 0.567 for ODI). The preliminary study of this pedicle-based dynamic stabilization device for 1- and 2-level lumbar spondylosis shows radiographic evidence of screw loosening in 19.7% of patients and 4.6% of screws. Nonetheless, the loosening of screws has no adverse effect on clinical improvement.
机译：动态稳定系统用于稳定退行性腰椎病。这种非融合植入物中的椎弓根螺钉松动是可以预见的。这项回顾性研究评估了螺钉松动的发生率及其对临床结果的影响。回顾了71例连续使用Dynesys动态稳定器减压治疗1级或2级腰椎病的患者的图表，X线照片和病历。对射线照相胶片进行评估并进行比较，以检测螺丝是否松动。使用视觉模拟量表（VAS）评估背痛，并使用Oswestry残疾指数（ODI）评估临床疗效。使用卡方检验和学生t检验进行统计分析。研究样本中的71名患者的平均年龄为59.2 +/- 11.65岁（范围23-80岁），女性占主导地位（39名女性，32名男性）。平均随访时间为16.6个月（范围8-29个月）。 71例患者中有14例存在螺钉松动（19.7％），每个螺钉率为4.6％（368螺钉中的17例）。大多数螺丝松动发生在> / = 55岁的患者中（14名患者中的13名），尽管年龄和性别对螺丝松动没有影响（分别为p = 0.233和0.109）。术后，松散螺钉组和实心螺钉组的VAS和ODI评分均得到显着改善。在VAS上，松散螺丝组的得分从5.9 +/- 2.99提高到2.1 +/- 2.14（p = 0.003），实心螺丝组的得分从5.7 +/- 3.45提高到2.9 +/- 2.68（p < 0.001）。对于ODI量表，松散螺钉组的得分从43.5 +/- 16.78％提高到28.0 +/- 18.18％（p = 0.006），从52.1 +/- 20.92％提高到24.6 +/- 19.78％（p < 0.001）在实心螺钉组中。两组之间没有显着差异（VAS p = 0.334，ODI p = 0.567）。这项针对1级和2级腰椎病的基于椎弓根的动态稳定装置的初步研究显示，放射影像学证据表明，有19.7％的患者和4.6％的螺钉松动。但是，拧松螺钉不会对临床改善产生不利影响。

著录项

  • 来源
    《Neurosurgical focus》 |2010年第6期|共1页
  • 作者

  • 作者单位
  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 外科学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号