中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (12): 1805-1810.doi: 10.3969/j.issn.2095-4344.2014.12.001

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

带负电荷硫酸钙/β-磷酸三钙复合骨水泥在椎体成形中的应用

张树芳1,陈荣春1,江建明2,朱青安2   

  1. 1赣州市人民医院脊柱外科,江西省赣州市  341000
    2南方医科大学南方医院脊柱骨科,广东省广州市  510515
  • 修回日期:2014-01-18 出版日期:2014-03-19 发布日期:2014-03-19
  • 通讯作者: 江建明,教授,博士生导师,南方医科大学南方医院脊柱外科,广东省广州市 510515
  • 作者简介:张树芳,男,1983年生,江西省赣州市人,2012年南方医科大学毕业,博士,主治医师,主要从事脊柱外科工作。
  • 基金资助:

    2012年国家自然科学基金项目(81171765)

Biphasic calcium composite bone cement with a negative surface charge used in vertebroplasty

Zhang Shu-fang1, Chen Rong-chun1, Jiang Jian-ming2, Zhu Qing-an2   

  1. 1Department of Spinal Surgery, Ganzhou People’s Hospital, Ganzhou 341000, Jiangxi Province, China
    2Department of Spinal Surgery, Nanfang Hospital of Southern Medical University, Guangzhou 510515, Guangdong Province, China
  • Revised:2014-01-18 Online:2014-03-19 Published:2014-03-19
  • Contact: Jiang Jian-ming, Professor, Doctoral supervisor, Department of Spinal Surgery, Nanfang Hospital of Southern Medical University, Guangzhou 510515, Guangdong Province, China
  • About author:Zhang Shu-fang, M.D., Attending physician, Department of Spinal Surgery, Ganzhou People’s Hospital, Ganzhou 341000, Jiangxi Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81171765

摘要:

背景:新型带负电荷硫酸钙/β-磷酸三钙复合骨水泥具有成骨效应,但目前尚无其应用于椎体成形的相关研究。
目的:通过动物实验评估新型带负电荷硫酸钙/β-磷酸三钙复合骨水泥在体内的生物力学性质及成骨性能。
方法:取30只新西兰大白兔建立骨质疏松模型4周后,在每只兔L3、L5椎体中央制造骨缺损,分别注射新型带负电荷硫酸钙/β-磷酸三钙复合骨水泥(实验组)与聚甲基丙烯酸甲酯骨水泥(对照组),L1椎体为未干预的骨质疏松模型。于术后3,6个月各处死15只,取3组椎体进行Micro-CT分析及生物力学实验。
结果与结论:①MicroCT三维重建显示,术后3个月时,实验组骨小梁三维结构参数明显优于对照组(P < 0.05),与骨质疏松模型组无显著差别(P > 0.05);术后6个月时,实验组骨小梁三维结构参数明显优于对照组和骨质疏松模型组(P均< 0.05)。②术后3个月时,实验组椎体强度明显小于对照组(P < 0.05),但高于骨质疏松模型组(P < 0.05);椎体刚度小于对照组和骨质疏松模型组(P均< 0.05)。术后6个月时,实验组椎体强度与对照组接近(P > 0.05),但高于骨质疏松模型组(P < 0.05);椎体刚度与对照组和骨质疏松模型组无差异(P > 0.05)。表明新型带负电荷硫酸钙/β-磷酸三钙复合骨水泥可以迅速有效地提高椎体生物力学强度,具有诱导成骨效应。


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, 骨水泥, 硫酸钙/β-磷酸三钙, 骨质疏松, 椎体成形术, 生物力学, 成骨作用, 动物实验, 国家自然科学基金

Abstract:

BACKGROUND: A newly developed calcium phosphate/β-tricalcium phosphate composite bone cement with a negative surface charge (genex®) has been reported to possess osteoinductivity properties. However, to our knowledge, no previous literatures have reported genex® for vertebroplasty in the osteoporotic spine.
OBJECTIVE: To evaluate the biomechanical properties and osteogenesis of vertebral bodies injected with genex® cement in a rabbit vertebroplasty defect model.
METHODS: Thirty New Zealand rabbits were used to establish osteoporosis models. Four weeks after modeling, model rabbits had an iatrogenically created cavitary lesion at L3 and L5 and were injected with either genex® cement (experimental group) or polymethyl methacrylate bone cement (control group). The L1 vertebral body served as model group without treatment. After 3 and 6 months, 15 rats from each group were executed respectively, and three vertebral samples were taken for Micro-CT analysis and biomechanical tests.
RESULTS AND CONCLUSION: (1) The Micro-CT showed better three-dimensional structure parameters of the trabecular bone in the experimental group than the control group (P < 0.05) after 3 months, which however had no difference from the model group (P > 0.05). After 6 months, the structure parameters in the experimental group were superior to those in the control and model groups (P < 0.05). (2) After 3 months, the vertebral body compression strength of the experimental group was lower than that of the control group (P < 0.05), but higher than that in the model group (P < 0.05). The vertebral stiffness of the experimental group was lower than that in control and model groups (P < 0.05). After 6 months, the vertebral body compression strength of the experimental group was not different from that of the control group (P > 0.05), but still higher than that of the model group (P < 0.05). The vertebral stiffness showed no difference between three groups (P > 0.05). These findings indicate that genex® cement can rapidly repair osteoporotic vertebral defects and improve the bone strength. Verterbroplasty with genex® cement has adequate osteoinductivity, biocompatibility, and adequate compressive strength.


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: biocompatible materials, vertebroplasty, osteoporosis, biomechanics

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