中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (20): 3190-3195.doi: 10.3969/j.issn.2095-4344.2017.20.013

• 组织构建实验造模 experimental modeling in tissue construction • 上一篇    下一篇

股骨延迟愈合外固定模型兔的建立与评估

张志天1,王淑民2,赵景新3,张  猛3   

  1. 1河北省承德县三沟中心卫生院骨外科,河北省承德市 067000;2河北省承德县妇幼保健计划生育服务中心,河北省承德市 067000;3承德医学院附属医院创伤骨科,河北省承德市 067000
  • 修回日期:2017-02-03 出版日期:2017-07-18 发布日期:2017-07-28
  • 通讯作者: 张猛,硕士,医师,承德医学院附属医院创伤骨科,河北省承德市双桥区 067000
  • 作者简介:张志天,男,1970年生,河北省承德县人,汉族,2012年承德医学院毕业,主治医师,主要从事创伤骨科方面的研究。

Establishment and evaluation of a rabbit model of femoral delayed union using external fixation

Zhang Zhi-tian1, Wang Shu-min2, Zhao Jing-xin3, Zhang Meng3   

  1. 1Department of Orthopaedics, Sangou Central Health Center of Chengde County of Hebei Province, Chengde 067000, Hebei Province, China; 2Maternal and Child Health Care and Family Planning Service Center, Chengde 067000, Hebei Province, China; 3Department of Traumatic Orthopedics, Affiliated Hospital of Chengde Medical University, Chengde 067000, Hebei Province, China
  • Revised:2017-02-03 Online:2017-07-18 Published:2017-07-28
  • Contact: Zhang Meng, Master, Physician, Department of Traumatic Orthopedics, Affiliated Hospital of Chengde Medical University, Chengde 067000, Hebei Province, China
  • About author:Zhang Zhi-tian, Attending physician, Department of Orthopaedics, Sangou Central Health Center of Chengde County of Hebei Province, Chengde 067000, Hebei Province, China

摘要:

文章快速阅读:

文题释义:
骨折延迟连接:
骨折在正常愈合所需的时间(一般为4个月内),仍未达到骨折完全愈合的标准,称为骨延迟连接。X射线显示 骨折端骨痂少,轻度脱钙,骨折线明显,但无骨硬化表现。
骨外固定:是利用外固定架(器)对骨折端进行复位和固定的一种治疗手段。它经软组织将内植物(针或钉)穿过骨折的远、近段,然后再通过连杆和固定夹将裸露于皮肤外的内植物彼此连接起来,在骨折端起到加压、牵拉和中和作用以达到复位和固定骨折,重建骨骼并校正畸形的目的。

 

摘要
背景:
关于骨折及骨折不愈合的研究已经较为清晰,对于骨折延迟愈合由于时间概念及治疗方法界定的争议较多。
目的:以新西兰大白兔为实验动物,以股骨为实验部位,选择外固定方式,建立一个可靠的骨折延迟愈合模型。
方法:新西兰长耳大白兔72只,随机分成3组,将实验A组及B组实验兔左侧股骨中段截除10 mm皮质骨,同时去除内外骨膜及骨髓,使用单边微型可调节外固定架固定,A组固定后保证骨折断端1 mm的间隙,B组固定后使用骨蜡封堵骨折断端同时保持骨折断端接触。对照组仅截断骨皮质不需截除内外骨膜及骨髓,然后进行固定并直接保持骨折断端接触,不做其他处理。造模后4,8,12周进行大体观察、影像学观察及组织学观察骨折断端的愈合情况。
结果与结论:①对照组骨性愈合时间为4周,A组及B组愈合时间均为12周,对照组只对大白兔进行了骨折处理,因此愈合时间即为骨折正常愈合时间,A组及B组的愈合时间明显长于对照组;②实验建立的兔股骨骨折延迟愈合模型具有延迟愈合的X射线及病理特征,结果表明模型是合理、可靠的,可以为临床研究提供一定的参考价值。

 

 

ORCID: 0000-0003-2905-3977(张志天)

关键词: 组织构建, 骨组织工程, 模型, 动物, 外固定架, 新西兰大白兔, 股骨, 骨折, 延迟愈合

Abstract:

BACKGROUND: Mechanisms related to bone fracture and nonunion have been clarified, but the healing time and treatment strategy of delayed union remain controversial.

OBJECTIVE: To establish a reliable model of femoral delayed union using external fixation in the New Zealand white rabbit.
METHODS: Seventy-two New Zealand white rabbits were randomized to three groups. After removal of 10-mm femoral middle bone cortex with internal and external periosteum and bone marrow, a uniplanar external fixator was used. There was a 1 mm gap between broken ends (group A), and the broken ends were sealed by bone wax (group B). For controls, only bone cortex was cut and then fixed to contact the broken ends. The gross, radiological and histological observations were performed to observe the bone healing at 4, 8 and 12 weeks after modeling.

RESULTS AND CONCLUSION: The control group achieved bone healing at the 4th week, which was considered as the normal time of bone healing. The groups A and B achieved healing at the 12th week, which was remarkably longer than that in the control group. The rabbit femoral delayed union model showed the typical X-ray imaging and pathological features of delayed union. Our results suggest that the model is reasonable and reliable, which can provide reference for clinical research.

 

 

Key words: Tissue Engineering, Models, Animal, External Fixators, Femur

中图分类号: