中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (39): 5819-5824.doi: 10.3969/j.issn.2095-4344.2016.39.007

• 骨科植入物 orthopedic implant • 上一篇    下一篇

掌骨重建钢板模拟单节段固定修复寰椎骨折:体外三维运动生物力学分析

李小峰1,覃俊杰2,李 强2,杨 渊1   

  1. 1广西骨伤医院,广西壮族自治区南宁市   5300122广西医科大学,广西壮族自治区南宁市   530021
  • 修回日期:2016-07-08 出版日期:2016-09-23 发布日期:2016-09-23
  • 通讯作者: 杨渊,主任医师,教授,广西骨伤医院,广西壮族自治区南宁市 530012
  • 作者简介:李小峰,男,硕士,主治医师。
  • 基金资助:

    广西卫生厅重点资助项目(重20120206);广西科学研究与技术开发计划项目(桂科攻1355005-6-4)

Metacarpal bone reconstruction plate single-segment fixation in the repair of atlas fracture: biomechanical analysis of in vitro three-dimensional motion

Li Xiao-feng1, Qin Jun-jie2, Li Qiang2, Yang Yuan1   

  1. 1Guangxi Orthopedics and Traumatology Hospital, Nanning 530012, Guangxi Zhuang Autonomous Region, China; 2Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China
  • Revised:2016-07-08 Online:2016-09-23 Published:2016-09-23
  • Contact: Yang Yuan, Chief physician, Professor, Guangxi Orthopedics and Traumatology Hospital, Nanning 530012, Guangxi Zhuang Autonomous Region, China
  • About author:Li Xiao-feng, Master, Attending physician, Guangxi Orthopedics and Traumatology Hospital, Nanning 530012, Guangxi Zhuang Autonomous Region, China
  • Supported by:

    the Key Fund Project of Health Department of Guangxi Zhuang Autonomous Region, No. 20120206; the Science Research and Technology Development Project of Guangxi Zhuang Autonomous Region, No. 1355005-6-4

摘要:

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文题释义:
寰椎:呈环形结构,围绕延颈髓和齿突,其侧块呈内薄外厚的楔形“嵌”在枕骨和枢椎间,与枕骨髁和枢椎上关节面形成对称的两个侧方关节,侧块不仅在载荷传递中起“衬垫”功能即将枕部载荷传向前后弓及枢椎,还维持着枕骨、枢椎间的垂直距离。
不稳定性寰椎骨折固定:国内研究表明,Halo Vest牵引固定耗时较长,难以获得对寰椎侧块满意而持久的复位,从而造成骨不愈合或愈合不良,临床疗效欠佳,有学者认为可能使原有的脱位发生不当固定进而引发进行性颈痛;针对寰枢(C1-2)或枕颈(C0-2)固定融合,但无论C1-2 还是C0-2 融合都将牺牲上颈椎的运动功能,尤其是旋转功能。
 
摘要
背景:为了实现骨折复位的稳定以及尽量保留颈椎活动度的完整,国内外多学者均开展了有关单节段有限内固定的临床与实验研究,均取得了良好的临床疗效,未见明显的寰枢关节失稳而引起的不适症状。
目的:采用体外三维运动法对掌骨重建钢板单节段固定不稳定性寰椎骨折进行生物力学分析。
方法:使用新鲜上颈椎标本(C0-C5)6例,将标本造成寰椎前弓双骨折模型,并以掌骨重建钢板系统模拟进行单节段复位固定。测量每例标本的正常状态、骨折状态及内固定状态3组数据。比较骨折状态、内固定状态、正常状态的运动中性区及三维运动范围与正常状态的差异。
结果与结论:①颈椎标本骨折状态与正常状态的运动中性区、三维运动范围差异均有显著性意义(P均< 0.05);而内固定状态与正常状态的运动中性区、三维运动范围差异均无显著性意义(P均> 0.05);②结果表明,掌骨重建钢板系统模拟单节段固定不稳定性寰椎骨折可以获得良好的稳定性,在恢复上颈椎稳定性的同时,可充分避免融合术的不良影响。

ORCID: 0000-0003-3988-6681(李小峰)

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

关键词: 骨科植入物, 脊柱植入物, 寰椎骨折, 单节段固定, 生物力学

Abstract:

BACKGROUND: To achieve the stability of the fracture reduction and try to keep the integrity of the cervical vertebra activity, domestic and foreign scholars have carried out the clinical and experimental research on the limited internal fixation of single segment, and achieved good clinical curative effect. There was no obvious discomfort symptoms caused by the instability of the atlantoaxial joint.

OBJECTIVE: To perform biomechanical analysis of fixed atlas fractures by single phase with three-dimensional motion experiment.
METHODS: Six fresh upper cervical spine specimens (C0-C5) were used, and made into models of double fracture of the anterior arch of the atlas. Single segment fixation was conducted with metacarpal bone reconstruction plate system simulation. Data of each specimen in intact state, fracture state and internal fixation state were measured. The neutral zones in fracture state, internal fixation state and intact state were compared, and the difference of three-dimensional motion range and intact state were compared.
RESULTS AND CONCLUSION: (1) There was statistically significant difference between the neutral zones and range of motion with those of fracture status and intact status (all P < 0.05). No significant difference was found between the result of fixation status and intact status (all P > 0.05). (2) Results verify that simulation of single-segment fixation of unstable atlas fractures with metacarpal bone reconstruction plate system can obtain good stability, restore the stability of the upper cervical spine, and simultaneously fully avoid adverse effects of fusion. 

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: Cervical Vertebrae, Biomechanics, Internal Fixators, Tissue Engineering

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