中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (15): 2333-2339.doi: 10.3969/j.issn.2095-4344.0728

• 脊柱植入物 spinal implant • 上一篇    下一篇

腰椎后路动态稳定系统修复退行性腰椎椎管狭窄:疗效及安全性分析

邓 勇1,向 静2   

  1. 1西南医科大学附属医院骨关节外科,四川省泸州市 646000;2西南医科大学附属医院卫校,四川省泸州市 646000
  • 出版日期:2018-05-28 发布日期:2018-05-28
  • 作者简介:邓勇,男,1986年生,四川省广安市人,2009年泸州医学院大学毕业,硕士,主治医师,主要从事骨关节、骨折退变及畸形方面的研究。

Posterior lumbar dynamic stabilization system in the treatment of degenerative lumbar spinal stenosis: efficacy and safety  

Deng Yong1, Xiang Jing2   

  1. 1Department of Orthopedics, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China; 2Medical School, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Online:2018-05-28 Published:2018-05-28
  • About author:Deng Yong, Master, Attending physician, Department of Orthopedics, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China

摘要:

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文题释义:
腰椎后路动态稳定系统:是针对后柱功能恢复的新兴的非融合技术,能在保留和恢复腰椎运动功能的同时延缓相邻节段退变,包括棘突间固定系统和经椎弓根固定的动态后路装置。
Dynesys动态稳定系统:是由钛螺丝钉、PCU弹性套管与PET弹性绳组成的动态中和系统,整个系统不含有金属组件,不进行水平固定,通过弹性套管压缩力对抗和弹性绳张力产生来分担脊柱各节段的载荷,保留被限制节段的屈伸范围的同时不增加纤维环后方与小关节的应力,而且可以应用于棘突较小的L5/S1节段。研究发现,Dynesys系统对屈伸与侧方弯曲运动有限制,几乎不限制轴向运动。
 
摘要
背景:腰椎后路动态稳定系统属于新的非融合技术,是治疗腰椎退行性疾病的新方法,主要包括棘突间固定系统和经椎弓根固定的动态后路装置,其中Wallis系统和Dynesys系统是两种不同部位固定系统的代表,关于这两种系统在退变性腰椎椎管狭窄治疗中的疗效比较鲜有报道。
目的:比较Wallis系统棘突间固定、Dynesys系统经椎弓根固定及融合术修复退变性腰椎椎管狭窄的有效性与安全性。
方法:自愿接受手术治疗的退变性腰椎椎管狭窄患者79例,按固定方式分为3组:融合组30例接受充分减压联合腰椎后路椎间融合术;Wallis组25例接受充分减压联合棘突间Wallis固定;Dynesys组24例接受充分减压联合Dynesys系统经椎弓根固定。所有患者术后3年随访资料完整。
结果与结论:①3组患者基线资料、术中出血量和术后引流量均无明显差异(P > 0.05);融合组手术时间明显长于其他两组(P < 0.05);②Wallis组和Dynesys组间脊髓功能评分、腰腿痛目测类比评分、Oswestry功能障碍指数和影像学测量指标比较均无明显差异(P > 0.05);融合组术后3年脊髓功能评分和Oswestry功能障碍指数均明显降低(P < 0.01),Wallis组和Dynesys组术后1个月的脊髓功能评分和Oswestry功能障碍指数较融合组均明显降低(P < 0.01),3组术后手术节段活动范围明显降低(P < 0.01),Wallis组和Dynesys组较融合组的手术上下位相邻节段活动范围明显升高,3组手术节段椎间高度、椎间孔高度和椎间孔面积均较术前明显增高(P < 0.01);③3组临床疗效评价与并发症发生率无明显差异(P > 0.05)。说明腰椎后路动态稳定系统(Wallis和Dynesys系统)内固定治疗退变性腰椎椎管狭窄症能有效缓解下腰痛和维持腰椎功能与活动度,近期疗效可靠。

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: 0000-0002-1154-5474(邓勇)

关键词: 后路动态稳定系统, 相邻节段退变, 脊柱外科, Wallis系统, Dynesys系统, 脊柱植入物, 腰椎退行性疾病, 椎管狭窄, 非融合技术, 融合技术, 骨科植入物

Abstract:

BACKGROUND: Lumbar posterior dynamic stabilization system is a new nonfusion method for the treatment of lumbar degenerative disease, mainly including interspinous dynamic fixation system and the posterior pedicle fixation device. Wallis system and Dynesys system are representative of two different fixation systems. There is little study on above two fixation systems in the treatment of degenerative lumbar spinal stenosis.

OBJECTIVE: To compare the effectiveness and safety of Wallis system interspinous fixation, Dynesys system transpedicular fixation and fusion in the treatment of degenerative lumbar spinal stenosis.
METHODS: Totally 79 cases of degenerative lumbar spinal stenosis voluntarily receiving the surgery were divided into three groups according to fixation mode. In the fusion group, 30 cases underwent full decompression combined with posterior lumbar interbody fusion. In the Wallis group, 25 cases underwent full decompression combined with interspinous Wallis fixation. In the Dynesys group, 24 cases underwent full decompression combined with pedicle screw fixation with Dynesys system. The follow-up data of all patients were complete at postoperative 3 years.
RESULTS AND CONCLUSION: (1) There was no significant difference in baseline data, intraoperative bleeding and postoperative drainage volume among the three groups (P > 0.05). The operation time of the fusion group was obviously longer than in the other two groups (P < 0.05). (2) There were no significant differences between the Wallis group and the Dynesys group in spinal function scores, visual analogue score of the low back pain, the Oswestry dysfunction index and the imaging measurement indexes (P > 0.05). The spinal function score and Oswestry dysfunction index of the fusion group were significantly decreased at postoperative 3 years (P < 0.01). The spinal function score and Oswestry dysfunction index of the Wallis and Dynesys groups at 1 month after operation were significantly lower than that in the fusion group (P < 0.01). The operation range of the three groups decreased significantly after operation (P < 0.01). Compared with the fusion group, the range of adjacent segments increased significantly in the Wallis group and the Dynesys group; and the intervertebral height, the height of the intervertebral foramen and the area of the intervertebral foramen in the three groups were significantly higher than those before the operation (P < 0.01). (3) There were no significant differences among the three groups in the evaluation of the clinical efficacy and the incidence of complications (P > 0.05). It was shown that lumbar posterior dynamic stabilization system (Wallis and Dynesys systems) internal fixation for degenerative lumbar spinal stenosis can effectively relieve low back pain and maintain lumbar function and activity, and the short-term curative effect is reliable.

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: Spinal Stenosis, Spinal Fusion, Tissue Engineering

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