中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (27): 4305-4310.doi: 10.3969/j.issn.2095-4344.0324

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

锁定加压重建钢板不同途径内固定置入治疗髋臼横行骨折的生物力学比较

钟 晓1,贾叙锋2,黄光平2,周庆忠3   

  1. 1四川大学华西医院附属资阳医院(资阳市第一人民医院)骨科,四川省资阳市   6413002简阳市人民医院骨科,四川省简阳市   6414003西南医科大学附属医院骨科,四川省泸州市   641400
  • 出版日期:2018-09-28 发布日期:2018-09-28
  • 作者简介:钟晓,男,1978年生,四川省资阳市人,2002年川北医学院毕业,副主任医师,主要从事创伤及手显微外科的疾病诊治。
  • 基金资助:

    四川省成都市卫生和计划生育委员科研项目(2016035)

Comparison of the biomechanical characteristics of the locking reconstruction plate through different placement methods for transverse fracture of the acetabulum  

Zhong Xiao1, Jia Xu-feng2, Huang Guang-ping2, Zhou Qing-zhong3   

  1. 1Department of Orthopedics, West China Ziyang Hospital, Sichuan University (the First People’s Hospital of Ziyang), Ziyang 641300, Sichuan Province, China; 2Department of Orthopedics, the People’s Hospital of Jianyang City, Jianyang 641400, Sichuan Province, China; 3Department of Orthopedics, the Affiliated Hospital of Southwest Medical University, Luzhou 641400, Sichuan Province, China
  • Online:2018-09-28 Published:2018-09-28
  • About author:Zhong Xiao, Associate chief physician, Department of Orthopedics, West China Ziyang Hospital, Sichuan University (the First People’s Hospital of Ziyang), Ziyang 641300, Sichuan Province, China
  • Supported by:

    the Research Project of Health and Family Planning Commission of Chengdu, Sichuan Province, No. 2016035

摘要:

文章快速阅读:

 

 

文题释义:
锁定重建钢板:除具有普通重建钢板的优点外,还具有稳定的内支架作用,可通过螺钉与钢板的锁定作用,将骨质、钢板锁定及螺钉形成一个整体,增强力学稳定性,显著降低术后内固定物松动、脱落、断裂等不良反应发生率;有效弥补了普通重建钢板的不足,具有极易弯曲可塑性,只需大致弧度贴近皮质骨,就可避免重建钢板固定时穿出皮质骨而引发的创伤性关节炎与复位丢失。
拉力螺钉:指的是螺钉所起的作用而不是特指某一种螺钉,可以是空心螺钉也可以是普通螺钉。
 
摘要
背景:将锁定重建钢板应用于髋臼骨折的内固定方式多种多样,不同的固定方式均有一定的优点,但目前关于不同内固定方式生物力学研究的报道不多见。
目的:对比锁定加压重建钢板不同内固定置入方式治疗髋臼横行骨折的生物力学差异。
方法:取40具成人半骨盆标本,制作髋臼横行骨折模型,随机分4组。单纯前柱固定组进行髂骨前柱锁定加压重建钢板内固定;单纯后柱固定组进行髂骨后柱锁定加压重建钢板内固定;前柱联合固定组进行髂骨前柱锁定加压重建钢板内固定,同时在髂骨后柱置入1枚拉力螺钉;后柱联合固定组进行髂骨后柱锁定加压重建钢板内固定,同时在髂骨前柱置入1枚拉力螺钉。检测4组骨盆标本分别在600,1 400,1 800 N载荷下的骨折端水平位移与纵向位移,计算轴向刚度。

结果与结论:①骨折端水平位移:在600,1 400,1 800 N载荷下,前柱联合固定组、后柱联合固定组骨折端水平位移小于单纯前柱固定组及单纯后柱固定组(P < 0.05),前柱联合固定组与后柱联合固定组骨折端水平位移比较差异无显著性意义,单纯前柱固定组骨折端水平位移小于单纯后柱固定组(P < 0.05);②骨折端纵向位移:在600,1 400,1 800 N载荷下,前柱联合固定组、后柱联合固定组骨折端纵向位移小于单纯前柱固定组及单纯后柱固定组(P < 0.05),前柱联合固定组与后柱联合固定组骨折端纵向位移比较差异无显著性意义,单纯前柱固定组骨折端纵向位移小于单纯后柱固定组(P < 0.05);③轴向刚度:在600,1 400,1 800 N载荷下,前柱联合固定组、后柱联合固定组轴向刚度大于单纯前柱固定组及单纯后柱固定组(P < 0.05),前柱联合固定组与后柱联合固定组轴向刚度比较差异无显著性意义,单纯前柱固定组轴向刚度大于单纯后柱固定组(P < 0.05);④提示对于髋臼横行骨折,采用锁定加压重建钢板联合拉力螺钉内固定的生物力学稳定性强于单纯锁定加压重建钢板内固定,并且行髂骨前柱锁定加压重建钢板内固定的生物力学稳定性强于髂骨后柱内固定。

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: 0000-0002-0119-2652(钟晓)

关键词: 锁定加压重建钢板, 内固定物, 髋臼横行骨折, 生物力学

Abstract:

BACKGROUND: Locking reconstruction plate is used in the internal fixation of acetabular fractures in a variety of ways, and different fixation methods have certain advantages. However, the biomechanical characteristics of different internal fixation methods are little reported.

OBJECTIVE: To compare the biomechanical differences of locking compression plate with different internal fixation methods in the treatment of acetabular transverse fracture.
METHODS: Forty adult semipelvic specimens were used to make the transverse acetabular fracture model, and then randomly divided into four groups. Anterior column fixation group received simple iliac anterior column locking reconstruction plate fixation; posterior column fixation group received locking compression plate fixation of anterior column reconstruction; the anterior column combined fixation group received iliac anterior column locking reconstruction plate fixation, while the posterior column implanted with one lag screw; posterior column combined fixation group received locking reconstruction plate internal fixation in the posterior column and one screw placement in the anterior column. The horizontal and longitudinal displacements of the fracture end under the loads of 600, 1 400 and 1 800 N were detected, and the axial stiffness was calculated.
RESULTS AND CONCLUSION: (1) The horizontal displacement of the fracture end under the loads of 600, 1 400 and 1 800 N in the anterior column and posterior column combined fixation groups was significantly lower than that in the anterior column and posterior column fixation groups (P < 0.05). There was no significant difference between anterior column and posterior column combined fixation groups, and the horizontal displacement in the anterior column fixation group was significantly smaller than that in the posterior column fixation group (P < 0.05). (2) The longitudinal displacement of the fracture end under the loads of 600, 1 400 and 1 800 N in the anterior column and posterior column combined fixation groups was significantly lower than that in the anterior column and posterior column fixation groups (P < 0.05). There was no significant difference between anterior column and posterior column combined fixation groups, and the longitudinal displacement in the anterior column fixation group was significantly smaller than that in the posterior column fixation group (P < 0.05). (3) The axial stiffness under the loads of 600, 1 400 and 1 800 N in the anterior column and posterior column combined fixation groups was significantly lower than that in the anterior column and posterior column fixation groups (P < 0.05). There was no significant difference between anterior column and posterior column combined fixation groups, and the longitudinal displacement in the anterior column fixation group was significantly smaller than that in the posterior column fixation group (P < 0.05). (4) These results indicate that for transverse acetabular fractures, locking compression plate combined with lag screw fixation shows better biomechanical stability than the single locking reconstruction plate internal fixation; and iliac bone anterior locking compression plate internal fixation reconstruction exhibits better biomechanical stability than the posterior column fixation.

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: Acetabulum, Fractures, Bone, Internal Fixators, Biomechanics, Tissue Engineering

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