髋臼前壁骨折模型的建立及不同内固定方式的生物力学稳定性比较

doi:10.13418/j.issn.1001-165x.2017.04.014

中国临床解剖学杂志 ›› 2017, Vol. 35 ›› Issue (4): 425-430.doi: 10.13418/j.issn.1001-165x.2017.04.014

髋臼前壁骨折模型的建立及不同内固定方式的生物力学稳定性比较

许博文^1，2，　张青松²，　安思琪¹，　裴宝瑞¹，　李浩¹，　戴世龙¹，　吴啸波³

1.华北理工大学研究生学院，唐山 063000； 2.开滦总医院普外科，唐山 063000；
3.河北医科大学第三医院骨科，石家庄 050001

收稿日期:2017-04-05 出版日期:2017-07-25 发布日期:2017-08-30
通讯作者: 张青松，教授，硕士生导师，E-mail：klyy88888888@163.com
作者简介:许博文(1990-)，男，在读硕士，主要研究方向：骨盆与髋臼骨折的治疗，Tel：18332790797，E-mail：drxubowen@foxmail.com
基金资助:
河北省唐山市科技支撑项目（14130260B）

Establishment of acetabular anterior wall fracture model and comparison of biomechanical stability of different internal fixation methods

XU Bo-wen ^1，2, ZHANG Qing-song², AN Si-qi¹, PEI Bao-rui¹, LI Hao1, DAI Shi-long¹, WU Xiao-bo³

1. School of Graduate, North China University of Science and Technology, Tangshan 063009, China; 2. Department of General Surgery, Kailuan General Hospital, Tangshan 063009, China; 3. Department of Orthopaedics, the Third Affiliated Hospital of Hebei Medical University, Shijiazhuang 050001, China

Received:2017-04-05 Online:2017-07-25 Published:2017-08-30

摘要/Abstract

摘要：

目的　建立髋臼前壁骨折模型，比较4种内固定方式的生物力学稳定性。方法　选取20个防腐成人半骨盆标本，建立髋臼前壁骨折模型。将骨折模型随机分为4组，A组采用真骨盆上缘重建接骨板固定，B组采用真骨盆内缘重建接骨板固定，C组采用顺行拉力螺钉固定，D组采用逆行拉力螺钉固定。对各组标本进行轴向压缩实验，测量骨折断端水平位移，计算剪切刚度，比较4组不同内固定方式的稳定性。结果　相同加载载荷下，骨折断端水平位移：A组>B组>C组>D组，内固定剪切刚度：D组>C组>B组>A组。载荷为400 N时各组水平位移及内固定剪切刚度差异均无统计学意义（P>0.05），载荷为800 N至2000 N时，除C组与D组间水平位移及内固定剪切刚度差异无统计学意义外（P>0.05），其余各组间比较差异均有统计学意义（P<0.05）。结论　髋臼前壁骨折模型可用于髋臼前壁骨折的生物力学分析，采用拉力螺钉固定髋臼前壁骨折的稳定性高于重建接骨板固定方式，其中顺行拉力螺钉固定与逆行拉力螺钉固定的稳定性相似。

关键词: 髋臼前壁骨折, 　骨折模型, 　内固定, 　生物力学

Abstract:

Objective　To establish the acetabular anterior wall fracture model and compare the biomechanical stability of 4 kinds of internal fixation methods.　Methods　20 fresh adult half pelvis specimens were selected to establish the acetabular anterior wall fracture model. The fracture models were randomly divided into 4 groups. Models in group A was fixed with a reconstruction plate along the upper margin of the pelvis, in group B was fixed with a reconstruction plate along the inner margin of the pelvis, and in group C was fixed with an antegrade lag screw, and in group D was fixed with a retrograde lag screw. The axial compression experiments were performed to measure the horizontal displacement of the fracture end in each group, and the shear rigidity was calculated. The biomechanical stability of the 4 groups was compared.　Results　Under the same load, the horizontal displacement of the fracture end: group A >group B >group C>group D; the internal fixation shear rigidity: group D>group C>group B>group A. There was no significant difference between the 4 groups in the horizontal displacement and the shear rigidity of internal fixation when the load was 400 N (P>0.05). When the load was 800 N to 2000 N, there was no significant difference between group C and group D in the horizontal displacement and the shear rigidity of internal fixation (P>0.05), and there was significant difference between the other groups (P<0.05).　Conclusions　The acetabular anterior wall fracture model established in this study can be used for biomechanical analysis of acetabular anterior wall fracture. The stability of lag screw fixation was higher than that of reconstruction plate fixation, and the stability of antegrade lag screw fixation was similar to that of retrograde lag screw fixation.

Key words: Acetabular anterior wall fracture, 　Fracture model, 　Internal fixation, 　Biomechanics

许博文，张青松，安思琪，裴宝瑞，李浩，戴世龙，吴啸波. 髋臼前壁骨折模型的建立及不同内固定方式的生物力学稳定性比较[J]. 中国临床解剖学杂志, 2017, 35(4): 425-430.

XU Bo-wen, ZHANG Qing-song, AN Si-qi, PEI Bao-rui, LI Hao, DAI Shi-long, WU Xiao-bo. Establishment of acetabular anterior wall fracture model and comparison of biomechanical stability of different internal fixation methods[J]. Chinese Journal Of Clinical Anatomy, 2017, 35(4): 425-430.

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髋臼前壁骨折模型的建立及不同内固定方式的生物力学稳定性比较

Establishment of acetabular anterior wall fracture model and comparison of biomechanical stability of different internal fixation methods

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