中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (52): 8382-8386.doi: 10.3969/j.issn.2095-4344.2014.52.004

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

钛铌锆钽合金可促进兔肱骨干横骨折的愈合

杨铁威1,刘欣伟2,柳云恩3,张玉彪3,周大鹏2,项良碧2   

  1. 1辽宁医学院研究生院,辽宁省锦州市  121001;解放军沈阳军区总医院,2骨科,3全军重症战创伤实验室,辽宁省沈阳市  110016
  • 修回日期:2014-11-17 出版日期:2014-12-17 发布日期:2014-12-17
  • 通讯作者: 项良碧,主任医师,博士生导师,解放军沈阳军区总医院骨科,辽宁省沈阳市 110016
  • 作者简介:杨铁威,男,1979年生,辽宁省沈阳市人,辽宁医学院研究生院在读硕士,医师,主要从事骨与关节损伤方向基础与临床研究。

Zirconium-titanium-niobium-tantalum alloys promote humeral shaft fracture healing of rabbits  

Yang Tie-wei1, Liu Xin-wei2, Liu Yun-en3, Zhang Yu-biao3, Zhou Da-peng2, Xiang Liang-bi2   

  1. 1Graduate School, Liaoning Medical University, Jinzhou 121001, Liaoning Province, China; 2Department of Orthopedics, 3PLA Laboratory of Severe Battle Trauma, General Hospital of Shenyang Military Region, Shenyang 110016, Liaoning Province, China
  • Revised:2014-11-17 Online:2014-12-17 Published:2014-12-17
  • Contact: Xiang Liang-bi, Chief physician, Doctoral supervisor, Department of Orthopedics, General Hospital of Shenyang Military Region, Shenyang 110016, Liaoning Province, China
  • About author:Yang Tie-wei, Studying for master’s degree, Physician, Graduate School, Liaoning Medical University, Jinzhou 121001, Liaoning Province, China

摘要:

背景:传统钢板的金属元素组成对人体存在潜在风险,中国自主研发的钛铌锆钽合金,其元素组成不存在致毒风险,具有低弹性模量和高强度等特点,为新型金属内植物的选择提供了新的思路。

目的:探讨钛铌锆钽合金对兔骨折端骨愈合的影响。
方法:锯断实验兔双侧肱骨干,其中一侧植入钛铌锆钽合金,作为实验组;另一侧植入普通钢板,作为对照组。术后28,56,84,112 d测试应力遮挡率;骨折前、骨折后、接骨器手术后即刻及术后的第14,28,56,84天测定骨折端骨生物电位;术后7,14,28,56 d对标本苏木精-伊红染色后在光镜下观察组织学变化。

结果与结论:实验组各时间点应力遮挡率低于对照组(P < 0.01)。与骨折建模前相比,骨折后两组的骨生物电位为负数,行内固定后可见电位降低,实验组较对照组降低更为明显(P < 0.05),实验组术后始终保持负电位且波动较小。术后56 d,实验组骨折端可见骨性连接形成,哈佛氏管重建较好,骨小梁排列有序且与骨轴向较为平行;对照组骨折端可见编织骨,骨小梁排列较实验组无序,皮质骨部分骨吸收。表明钛铌锆钽合金可促进骨折愈合。


中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程


全文链接:

关键词: 生物材料, 骨生物材料, 钛合金, 骨折, 骨生物电, 应力遮挡, 实验研究

Abstract:

BACKGROUND: Metal elements of traditional steel plates have a potential risk to the human body. Zirconium-titanium-niobium-tantalum alloy independently developed in China has some advantages such as no toxic hazard, low elastic modulus and high strength, and it provides a new train of thought for new metal implants.

OBJECTIVE: To study the effect of zirconium-titanium-niobium-tantalum alloy on bone healing of rabbit fracture end.
METHODS: Rabbit bilateral humeral shafts were sawed and implanted with zirconium-titanium-niobium-tantalum alloy (experimental group) and ordinary steel plate (control group), respectively. At postoperative 28, 56, 84, 112 days, stress shielding rate was tested. The biological potential of fracture end was determined before and after fracture, immediately, 14, 28, 56, 84 days after surgery. Hematoxylin-eosin staining was performed to observe histological changes of samples at 7, 14, 28, 56 postoperative days under light microscope.
RESULTS AND CONCLUSION: The stress shielding rate at each time point was lower in the experimental group than the control group (P < 0.01). After modeling of fracture, the bone biological potential was negative in the two groups; after internal fixation, the electric potential in the experimental group was reduced more significantly than that in the control group (P < 0.05). The experimental group always maintained the negative potential that exhibited less fluctuation after surgery. At 56 days after surgery, bone union was visible at the fracture end of the experimental group, the Haversian canal was reconstructed successfully, and the trabecular bone was orderly arranged parallel to the bone axis; while in the control group, woven bone tissues were visible at the fracture end, the woven bone, the trabecular bone was in disorder, and the cortical bone was partially absorbed. These findings indicate that the zirconium-titanium-niobium-tantalum alloy can promote fracture healing.

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程


全文链接:

Key words: titanium, alloys, humeral fractures

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