中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (47): 7566-7572.doi: 10.3969/j.issn.2095-4344.2014.47.005

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

椎体成形过程中磷酸钙骨水泥及可降解网状微孔球囊的应用

谢志勇1,刘训伟1,钟  建2,魏岱旭2,叶  勇1,杜艳霞1,孙  钢1   

  1. 1解放军济南军区总医院医学影像科,山东省济南市  250031
    2纳米技术及应用国家工程研究中心,上海市  200241
  • 修回日期:2014-09-19 出版日期:2014-11-19 发布日期:2014-11-19
  • 通讯作者: 孙钢,主任医师,博士,教授,博士生导师,解放军济南军区总医院医学影像科,山东省济南市 250031
  • 作者简介:谢志勇,男,1964年生,山东省莱州市人,解放军第四军医大学毕业,副主任医师,主要从事介入诊疗研究。
  • 基金资助:

    国家高技术研究发展计划(863计划)资助(2013AA032203);国家自然科学基金资助(51073173)

Calcium phosphate bone cement and biodegradable mesh-like microporous balloon for vertebroplasty

Xie Zhi-yong1, Liu Xun-wei1, Zhong Jian2, Wei Dai-xu2, Ye Yong1, Du Yan-xia1, Sun Gang1   

  1. 1Department of Medical Image, Jinan Military General Hospital, Jinan 250031, Shandong Province, China
    2National Engineering Research Center for Nanotechnology (NERCN), Shanghai 200241, China
  • Revised:2014-09-19 Online:2014-11-19 Published:2014-11-19
  • Contact: Sun Gang, M.D., Chief physician, Professor, Doctoral supervisor, Department of Medical Image, Jinan Military General Hospital, Jinan 250031, Shandong Province, China
  • About author:Xie Zhi-yong, Associate chief physician, Department of Medical Image, Jinan Military General Hospital, Jinan 250031, Shandong Province, China
  • Supported by:

    the National High Technology Research and Development Program of China (863 Program), No. 2013AA032203; the National Natural Science Foundation of China, No. 51073173

摘要:

背景:体外实验研究证明可降解高分子网状球囊具有较好的防渗漏性,并能保证周围钙离子处于一恒定状态,对细胞生长及新骨与钙盐骨水泥形成微观绞锁无抑制作用。
目的:通过动物实验评估可降解网状微孔球囊联合钙盐骨水泥治疗椎体骨折的作用。
方法:穿刺48只新西兰兔左下肢近股骨端,建立通道后引入骨钻,建立骨折模型,随机均分为两组,实验组于骨折处植入可降解网状微孔球囊与磷酸钙骨水泥,对照组植入磷酸钙骨水泥。术后1,3,6个月测试血细胞、生化指标,并行X射线摄片或CT扫描,将标本固定处理后进行病理分析。
结果与结论:骨水泥注入过程顺利,实验组球囊膨胀良好,未见明确骨水泥外渗;对照组骨水泥弥散,3只出现肺栓塞。两组手术前后血细胞、生化指标组内与组间比较差异均无显著性意义。两组材料在骨骼内生物相容性好,病理学无明显免疫反应;实验组1个月时囊壁变薄,部分部位骨组织长入骨水泥内,3个月时有大量骨组织进入骨水泥间隙,骨水泥体积减少,6个月时球囊消失,骨组织内可见部分骨水泥成分;对照组骨水泥降解时间不确定。表明可降解网状微孔球囊联合钙盐骨水泥治疗骨折的效果满意,优于单独骨水泥治疗效果。


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, 可降解材料, 纳米纤维, 骨折, 生物相容性, 国家自然科学基金

Abstract:

BACKGROUND: In vitro experiments have demonstrated that the biodegradable mesh-like microporous balloon made of macromolecular materials has obvious advantage of anti-leakage, which is capable of maintaining calcium homeostasis, has no inhibitory effects on cell growth and on microscopic interdigitation formation between new bone and bone cement.
OBJECTIVE: To evaluate the therapeutic effects of biodegradable mesh-like microporous balloon with calcium bone cement on vertebral fractures based on animal experiments.
METHODS: The fracture model was established in 48 New Zealand rabbits, in which a bone drill was introduced after successful puncture at sites near left low extremity of the femur. These rabbit models were randomized into two groups: experimental group with calcium phosphate bone cement and biodegradable mesh-like microporous balloon and control group only with calcium phosphate bone cement. Clinical parameters such as blood cell count, biochemistry, and CT/X ray were examined at 1, 3 and 6 months after implantation of the balloon and bone cement. After that, the specimens were fixed for pathological analysis.
RESULTS AND CONCLUSION: The operation was performed under general anesthesia with no eventful infusion of bone cement. The expansion of balloon was satisfactory without definite extravasation of bone cement in the experimental group. In the control group, cement diffusion was found with pulmonary embolism occurring in three New Zealand rabbits. No statistical significance for blood cell counts and biochemistry was found between pre- and postoperation or between two groups. The materials in the two groups had favorable biocompatibility with injured bones without obvious immunological response. In the experimental group, the balloon wall was thinned and partial bone tissues grew into the cement at 1 month; at 3 months, a large amount of bone tissues grew into the cement and cement volume diminished; at 6 months, the balloon disappeared and only a small amount of cement left in the bone tissues. In the control group, it was difficult to determine when the cement degraded. The biodegradable mesh-like microporous balloon combined with calcium bone cement is superior to bone cement alone in the management of vertebral fractures.


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: nanofibers, fractures, biocompatible materials

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