中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (22): 3255-3262.doi: 10.3969/j.issn.2095-4344.2016.22.009

• 脊柱植入物 spinal implant • 上一篇    下一篇

RTS和SEXTANT经皮微创椎弓根螺钉置入修复不稳定胸腰椎骨折:椎体复位高度比较

赵 刚,周英杰,王许可   

  1. 河南省洛阳正骨医院脊柱外科,河南省洛阳市 471002
  • 修回日期:2016-04-19 出版日期:2016-05-27 发布日期:2016-05-27
  • 通讯作者: 周英杰,硕士生导师,主任医师,河南省洛阳正骨医院,脊柱外科,河南省洛阳市 471002
  • 作者简介:赵刚,男,1974年生,山西省昔阳县人,汉族,郑州大学毕业,硕士,副主任医师,主要从事脊柱外科的临床及基础研究。
  • 基金资助:

    河南省重点中医学科学术带头人基金培养项目(2100601)

RTS versus SEXTANT percutaneous pedicle screw fixation for unstable thoracolumbar fractures under minimally invasive technology: recovery of the height of the vertebral body

Zhao Gang, Zhou Ying-jie, Wang Xu-ke   

  1. Department of Orthopedics, Luoyang Orthopedic Hospital, Luoyang 471002, Henan Province, China
  • Revised:2016-04-19 Online:2016-05-27 Published:2016-05-27
  • Contact: Zhou Ying-jie, Master’s supervisor, Chief physician, Department of Orthopedics, Luoyang Orthopedic Hospital, Luoyang 471002, Henan Province, China
  • About author:Zhao Gang, Master, Associate chief physician, Department of Orthopedics, Luoyang Orthopedic Hospital, Luoyang 471002, Henan Province, China
  • Supported by:

    the Key Academic Leader Fund Training Program of Traditional Chinese Medicine of Henan Province, No. 2100601

摘要:

文章快速阅读:

 

文题释义:

经伤椎单节段固定:为了解决减少固定节段、增加内固定强度、增加伤椎复位满意度的问题,近年来,不断有学者尝试经伤椎固定。生物力学测试证明,胸腰椎骨折经伤椎椎弓根内固定能加强脊柱的稳定性。在伤椎置入螺钉可以增强术后稳定性,能更好维持骨折椎体的稳定,减少伤椎高度的丢失。
轴向拔出力:多用来评价椎弓根螺钉固定强度。因螺钉和其周围的骨组织之间的剪切应力决定轴向拔出力,所以轴向拔出力可以较好的反应骨-螺钉界面结合的初始强度。试验表明RTS系统最大抗拔出力与普通椎弓根螺钉接近,证明其对脊柱椎体的强度、刚度及稳定性均有明显的加强,并达到了普通的椎弓根的力学性能。
 
摘要
背景:目前随着微创技术的发展,经皮椎弓根内固定技术的应用趋于广泛,但在胸腰椎骨折的经皮椎弓根螺钉固定中,因后路撑开复位装置的缺乏或复位力量较弱的缺陷,导致对伤椎的复位较差,为改进这一缺陷,对经皮椎弓根螺钉进行了改进,以期能够达到理想的复位效果。
目的:以伤椎复位高度的角度对比RTS和SEXTANT两种经皮椎弓根螺钉修复不稳定胸腰椎骨折的效果差异。
方法:2011年10月至2013年6月分别采用2种经皮椎弓根螺钉系统修复单节段无神经症状的胸腰椎骨折患者50例,其中25例使用Sextant系统,25例使用改良的RTS系统。分别比较2组间治疗后1周、3个月、6个月及末次随访的伤椎前、后缘高度、后凸Cobb角、目测类比评分及Oswestry功能障碍指数。

结果与结论:①2组患者均获得8-18个月的随访;②2组患者的治疗后伤椎前、后缘高度、后凸Cobb角较治疗前均有恢复,差异有显著性意义(P < 0.01);RTS组治疗后伤椎前缘、椎体后缘、后凸Cobb角恢复情况明显优于SEXTANT组(P < 0.05-0.01);③RTS组治疗后6个月及末次随访目测类比评分及Oswestry功能障碍指数均显著优于SEXTANT组(P < 0.05);④结果提示,RTS和SEXTANT两种经皮椎弓根螺钉系统均能有效修复无神经症状的胸腰椎单节段骨折,但RTS组具有椎体复位高度更理想,修复后疼痛和功能障碍更轻微的优点。

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程

ORCID: 0000-0003-4285-7881(赵刚)

关键词: 骨科植入物, 脊柱植入物, 胸椎, 腰椎, 脊柱骨折, 内固定, 微创性

Abstract:

BACKGROUND: In recent years, with the development of minimally invasive techniques, the application of percutaneous pedicle screw fixation techniques gradually become widespread, but in the percutaneous pedicle screw fixation for thoracolumbar fractures, due to lack of reduction apparatus or power defect, the reduction of the injured vertebra is poor. In order to improve this deficiency, we design a percutaneous pedicle screw system in order to achieve the desired effect of reduction.

OBJECTIVE: To investigate the two different effects for treating unstable thoracolumbar fractures by fixing RTS (rotation softened trauma fixation system) or SEXTANT screws under minimally invasive technology. 
METHODS: From October 2011 to June 2013, 50 patients who suffered from single-segment thoracolumbar fractures without any nerve-injured symptoms were treated by using percutaneous pedicle screws. Among them, 25 cases used Sextant screws; the others used RTS screws. Data were compared between the two groups, including the height of injured vertebrae, Cobb’s angle, visual analogue scale scores and Oswestry disability index 1 week, 3 and 6 months postoperatively, and during final follow-up.

RESULTS AND CONCLUSION: (1) All patients were followed up for 8-18 months. (2) The height of injured vertebrae and Cobb’s angle were restored in both groups, showing significant differences (P < 0.01). The restoration of the height of injured vertebrae and Cobb’s angle was better in the RTS group than in the SEXTANT group after treatment (P < 0.05-0.01). (3) The visual analogue scale scores and Oswestry disability index were significantly better in the RTS group than in the SEXTANT group 6 months postoperatively and during final follow-up (P < 0.05). (4) These results suggest that both RTS and SEXTANT systems can effectively repair single-segment thoracolumbar fractures without any nerve-injured symptoms. However, it is clear that the recovery of the height of the vertebral body is more satisfied and the postoperative pain and dysfunction were more minor in the RTS group. 
中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程

Key words: Thoracic Vertebrae, Lumbar Vertebrae, Spinal Fractures, Internal Fixators, Follow-Up Studies, Tissue Engineering

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