中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (3): 324-329.doi: 10.3969/j.issn.2095-4344.2016.03.004

• 组织工程骨及软骨材料 tissue-engineered bone and cartilage materials • 上一篇    下一篇

晶须化磷酸钙多孔生物活性陶瓷修复犬股骨髁缺损

周朝玺1,崔 旭2,敖国昆2,许韬韬3,翁 杰3,肖占文4,张兴栋4,张 聪2   

  1. 1河北北方学院,河北省张家口市  0750002解放军第309医院,北京市 100091;3西南交通大学材料学院,材料先进技术教育部重点实验室,四川省成都市  6100004四川大学生物材料工程研究中心,四川省成都市  610000
  • 收稿日期:2015-11-24 出版日期:2016-01-15 发布日期:2016-01-15
  • 通讯作者: 张聪,主任医师,解放军第309医院,北京市 100091
  • 作者简介:周朝玺,男,1990年生,河南省平顶山市人,汉族,河北北方学院在读硕士,主要从事生物活性人工骨材料的相关研究。
  • 基金资助:
    国家自然科学基金资助项目(81190131);国家科技支撑计划课题(2012BAI17B01)

Wisker-covered porous calcium phosphate ceramics in repair of canine femoral condyle defects

Zhou Chao-xi1, Cui Xu2, Ao Guo-kun2, Xu Tao-tao3, Weng Jie3, Xiao Zhan-wen4, Zhang Xing-dong4, Zhang Cong2   

  1. 1Hebei North University, Zhangjiakou 075000, Hebei Province, China; 2the 309th Hospital of Chinese PLA, Beijing 100091, China; 3the Key Laboratory of Advanced Technology for Materials of Ministry of Education, School of Materials, Southwest Jiaotong University, Chengdu 610000, Sichuan Province, China; 4Engineering Research Center in Biomaterials, Sichuan University, Chengdu 610000, Sichuan Province, China
  • Received:2015-11-24 Online:2016-01-15 Published:2016-01-15
  • Contact: Zhang Cong, Chief physician, the 309th Hospital of Chinese PLA, Beijing 100091, China
  • About author:Zhou Chao-xi, Studying for master’s degree, Hebei North University, Zhangjiakou 075000, Hebei Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81190131; the National Key Technology Support Program, No.2012BAI17B01

摘要:

文章快速阅读:

 

文题释义:
陶瓷晶须:是以特种陶瓷原料为原料制造的晶须有单晶体纤维和多晶纤维。有氧化铝、碳化硅、碳化硼、二氧化锆、氮化铝和氮化硅晶须等。具有高强度、高弹性模量、低密度、高耐热等性能。按纤维的长度分为长纤维、定长纤维和短纤维等。按制造工艺方法不同,分为晶体生长法、气相沉积法、前驱体法、化学转化法、熔融法等。用作增韧补强材料。
磷酸钙人工骨:具有良好的骨诱导性、骨传导性及血管化能力。目前比较常见的磷酸钙人工骨成分有羟基磷灰石、磷酸三钙、双相磷酸钙陶瓷等。磷酸钙生物活性陶瓷支架置入动物背部肌肉或腹腔大网膜等位置后有一定的诱导成骨能力,在支架置入动物骨缺损或者背部肌肉一段时间后,进行病理组织学、X射线、CT、DSA等影像学检查,可以观察到材料周围有一定的新骨形成,同时周围有大量的新生血管长入材料内部。该材料已通过FDA认证,并且有许多相应的产品如人工骨条、髋关节生物活性涂层、人工义眼等产品应用于临床。

 

背景:前期研究证实,经晶须化处理的磷酸钙多孔生物活性陶瓷内部微观结构得到一定改变,具有良好的力学性能。
目的:进一步观察晶须化磷酸钙多孔生物活性陶瓷修复犬股骨髁缺损的效果。
方法:采用占位法制备贯通性良好的磷酸钙多孔生物活性陶瓷,经水热处理法完成材料的晶须化。取15只健康成年比格犬,在双侧股骨外侧髁用电钻制造一直径10 mm、深度10 mm的圆柱状包容性骨缺损,右侧置入晶须化磷酸钙多孔生物活性陶瓷,作为实验组;左侧置入未经过晶须化处理的磷酸钙多孔生物活性陶瓷,作为对照组。置入后第2,4,8,12周分别进行骨缺损区X射线及双能X射线检查。

结果与结论:①X射线:随着时间的增加,两组骨缺损与正常骨质周围的界面逐渐模糊、消失,12周时两组骨缺损界面已完全融合,对照组材料部分溶解,实验组材料随着时间增长未见明显溶解,两组不同时间点的X射线评分比较差异无显著性意义。②双能X射线:随着时间的增加,两组骨密度逐渐增加,但两组不同时间点的骨密度比较差异无显著性意义。表明晶须化磷酸钙多孔生物活性陶瓷具有良好修复股骨髁缺损的能力。 

 

ORCID: 0000-0003-4871-9551(周朝玺)

关键词: 生物材料, 骨生物材料, 磷酸钙, 晶须化, 骨缺损, 骨密度, 多孔支架, 国家自然科学基金

Abstract:

BACKGROUND: Previous studies have demonstrated that the internal microstructure of porous calcium phosphate ceramics after the whiskering process has some changes, and obtain good mechanical properties.
OBJECTIVE: To further investigate the effect of whisker-covered porous calcium phosphate ceramics in repair of canine femoral condyle defects.
METHODS: Highly interconnected porous calcium phosphate ceramics was prepared by placeholder method. The whiskering of the materials was finished by hydrothermal process. Fifteen healthy adult beagle dogs were selected in this study. A 10 mm×10 mm cylindrical inclusive bone defect was made bilaterally on the lateral femoral condyle with a drill. The porous calcium phosphate ceramics after the whiskering process was implanted onto the right femoral condyle as experiment group. The porous calcium phosphate ceramics without the whiskering process was implanted onto the left femoral condyle as control group. At 2, 4, 8, and 12 weeks after implantation, X-ray and dual-energy X-ray test were conducted in the bone defect area respectively.
RESULTS AND CONCLUSION: (1) X-ray: With the increase of time, the interface between bone defect and normal bone of two groups gradually blurred, disappeared, and completely fused at 12 weeks. The material in the control group was partially dissolved, while there was no obvious dissolution in the experiment group. No significant difference in the X-ray scores was found between two groups at different time points. (2) Dual-energy X-ray: With the increase of time, the bone mineral density of the two groups both increased gradually, but there was no significant difference in the bone mineral density at different time points between these two groups. These results demonstrate that the porous calcium phosphate ceramics after the whiskering process has good ability to repair the defects of femoral condyle.