中国临床解剖学杂志 ›› 2009, Vol. 27 ›› Issue (6): 712-.

• 实验研究 • 上一篇    下一篇

可注射性纳米羟基磷灰石、壳聚糖复合材料修复骨缺损的实验研究

许 勇1, 朱立新1, 田 京1, 黄 锐2, 于 博2, 李志浩2, 付国建2, 刘登军2, 冯庆玲3, 黄 智3   

  1. 1.南方医科大学附属珠江医院骨科中心,  广州   510282;    2.清华大学材料科学与工程系,  北京   100084
  • 收稿日期:2009-04-02 出版日期:2009-12-25 发布日期:2010-01-06
  • 通讯作者: 田京,副主任医师,副教授,E-mail:Jing-tian@msn.com E-mail:357681601@qq.com
  • 作者简介:许 勇(1984-),男,青海人,在读硕士,研究方向:骨与关节损伤的修复,Tel:13533434481
  • 基金资助:

    广东省自然科学基金资助(7005193)

Experimental study of injectable nano-hydroxyapatite/ chitosan composite on repairing of bone defect

XU Yong,ZHU Li-xin , TIAN Jing, et al.   

  1. Department of Orthopedics, Zhujiang Hospital of Southern Medical University, Guangzhou 510282, China
  • Received:2009-04-02 Online:2009-12-25 Published:2010-01-06

摘要:

  目的:观察可注射性羟基磷灰石/壳聚糖复合材料对兔桡骨骨缺损修复效果。方法:18只新西兰白兔双侧桡骨中段建立长度为10mm节段性缺损,将可注射性纳米羟基磷灰石/壳聚糖复合材料植入一侧骨缺损作为实验组,另一侧植入单纯羟基磷灰石材料作为对照组,于第4、8、12周末,分别行大体、X线检查、组织学、电镜检测,观察该材料对骨缺损的修复效果。结果:①大体观察、X线检查提示:实验组骨痂生长良好,骨缺损完全修复,对照组骨缺损部分修复,部分骨皮质不连续。②组织形态学: 术后12周,实验组新生骨皮质连接完整,髓腔完全再通;对照组少量新生骨形成,部分纤维组织填充③电镜检查:12周实验组材料基本降解,被新生骨组织替代。结论:可注射性纳米羟基磷灰石/壳聚糖复合材料骨缺损修复能力较单纯羟基磷灰石好,具有确实的骨缺损修复能力。

关键词: 羟基磷灰石, 壳聚糖, 骨缺损, 修复

Abstract:

        Objective: To explore repair effects of  injectable nano-hydroxyapatite/ chitosan(nHA/CS) composite on radius bone defect. Methods: Bone defect with the length of 10 mm were created on the middle of each radius of 18 New Zealand white rabbits. the defects was filled with the nHA/CS composite as treatment group, while the others were filled with hydroxyapatite(HA) as control. The ability of repairing bone defect was evaluated by gross observation, X-ray, histopathological and SEM 4, 8, 12 weeks after operation. Results: ① The gross and X-ray showed that, in treatment group, the callus grew well and bone defect was repaired completely, oppositely, in control group, bone defect was repaired partly, with some nonunion. ② Histomorphology showed that, the new formed bone in treatment group was confirmed integral and the medullary cavity recanalized after 12 weeks, however, a little of  new  bone formed in the control group, accompanied with connective tissues growing into the defects. ③ Under the SEM, materials was replaced by newly formed bone after 12 weeks in treatment group. Conclusions: The nHA/CS has better ability of bone repairing than that of the HA.

Key words: hydroxyapatite, chitosan, bone defect, repair

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