中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (53): 8646-8650.doi: 10.3969/j.issn.2095-4344.2014.53.022

• 骨与关节生物力学 bone and joint biomechanics • 上一篇    下一篇

锁骨中段骨折修复:重建钢板前置与上置的生物力学差异

刘  川   

  1. 解放军北京军区总医院骨科,北京市  100700
  • 修回日期:2014-09-27 出版日期:2014-12-24 发布日期:2014-12-24
  • 作者简介:刘川,男,1985年生,天津市人,主要从事骨科方面的研究。

Mid-clavicle fracture: biomechanical difference between anterior and superior reconstruction plate

Liu Chuan   

  1. Department of Orthopedics, General Hospital of Beijing Military Area Command of Chinese PLA, Beijing 100700, China
  • Revised:2014-09-27 Online:2014-12-24 Published:2014-12-24
  • About author:Liu Chuan, Department of Orthopedics, General Hospital of Beijing Military Area Command of Chinese PLA, Beijing 100700, China

摘要:

背景:锁骨位置表浅,受到外界的应力极易发生骨折,重建钢板内固定是一种常用的修复方式,但钢板放置的最佳位置尚无统一观点。
目的:采用有限元方法对比分析锁骨中段斜行骨折前置位和上置位重建钢板内固定的生物力学数据,以寻找更加有效的钢板放置位置。
方法:从2012年9月至2013年9月在接受体检的健康群体中随机选择6名健康男性进行研究,均予以锁骨螺旋CT扫描,利用三维有限元方法,建立锁骨中段骨折重建钢板上置位和前置位内固定的三维有限元模型,并模拟不同的工况,对相关生物力学数据进行比较分析。
结果与结论:压缩工况下,前置位和上置位各生物力学相关指标比较差异均无显著性意义(P均> 0.05);顺时针扭转和弯曲时,前置位最大应力显著大于上置位,差异有显著性意义(P < 0.05),但骨折块最大综合位移比较二者差异无显著性意义(P > 0.05);逆时针扭转工况下,逆时针扭转和弯曲时,二者各指标数值比较差异均无显著性意义(P > 0.05);如果在弯曲工况条件下,位移方面两种位置比较差异无显著性意义(P > 0.05),但在骨折断端应力和内固定应力方面,前置位均显著大于上置位,具有更明显的应力集中效应,差异均有显著性意义(P均 < 0.05)。提示利用重建钢板前置与上置内固定修复锁骨中段骨折会出现一定的生物力学差异,其中,采用重建钢板前置内固定是一种较为可靠的治疗方法。


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


全文链接:

关键词: 植入物, 数字化骨科, 锁骨中段骨折, 重建钢板前置, 重建钢板上置, 生物力学

Abstract:

BACKGROUND: Clavicle has a superficial location and is prone to fracture caused by external stress. Reconstruction plate repair is a common mode of treatment, but the best location of the plate placed remains controversial.
OBJECTIVE: This study aims to compare biomechanical data between anterior and superior reconstruction plate fixation for treating the mid-clavicle oblique fracture using the finite element method, so as to find more effective plate position.
METHODS: Six healthy men accepting medical examination in our hospital from September 2012 to September 2013 were selected and were detected with clavicular spiral CT scanning. Three-dimensional finite element method was used to establish three-dimensional finite element models for anterior and superior reconstruction plate fixation in treatment of mid-clavicle oblique fracture. Different situations were simulated to compare biomechanical data.
RESULTS AND CONCLUSION: There was no significant difference in the indexes of biomechanics between the anterior and the superior positions under the compression condition (P > 0.05). Under the conditions of clockwise torsion and bending, the maximal stress at the anterior position was significantly higher than that at the superior position (P < 0.05), but no significant difference was found in the maximum displacement of fracture block (P > 0.05). Under counterclockwise torsion and bending conditions, the two positions showed no significant difference in the detected indexes (P > 0.05); no statistically significant differences were found in the displacement under bending condition (P > 0.05), but the internal fixation stress and fracture stress at the anterior position were significantly higher than that at the superior position, and anterior position had more obvious stress concentration effect (P < 0.05). Reconstruction plate at the two positions may cause different biomechanical data in treatment of clavicle fractures, and anterior plate fixation is more 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


全文链接:

Key words: clavicle, fracture, internal fixators, stress, biomechanics

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