中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (14): 2140-2145.doi: 10.3969/j.issn.2095-4344.0186

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

小剂量骨水泥弥散度的效果评价

孙海波1,齐 明1,海 涌2,王心宽1,张武军3,贺迎花3,李 华1,张国富1,赵继阳1,曹连续1   

  1. 北京市通州区中西医结合医院,1骨科,3放射科,北京市 101100;2首都医科大学附属北京朝阳医院骨科,北京市 100020
  • 收稿日期:2017-12-01 出版日期:2018-05-18 发布日期:2018-05-18
  • 通讯作者: 孙海波,北京市通州区中西医结合医院骨科,北京市 101100
  • 作者简介:孙海波,男,1984年生,河北省衡水市人,汉族,2011年河北医科大学毕业,硕士,主治医师,主要从事脊柱骨科研究。
  • 基金资助:

    通州区卫生发展科研专项项目(TWKY-2016-PT-01-08)

Dispersion degree of a small-dose bone cement

Sun Hai-bo1, Qi Ming1, Hai Yong2, Wang Xin-kuan1, Zhang Wu-jun3, He Ying-hua3, Li Hua1, Zhang Guo-fu1, Zhao Ji-yang1, Cao Lian-xu1   

  1. 1Department of Orthopaedics, 3Department of Radiology, the Traditional Chinese and Western Medicine Hospital of Tongzhou District, Beijing 101100, China; 2Department of Orthopaedics, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
  • Received:2017-12-01 Online:2018-05-18 Published:2018-05-18
  • Contact: Sun Hai-bo, Department of Orthopaedics, 2Department of Radiology, the Traditional Chinese and Western Medicine Hospital of Tongzhou District, Beijing 101100, China
  • About author:Sun Hai-bo, Master, Attending physician, Department of Orthopaedics, the Traditional Chinese and Western Medicine Hospital of Tongzhou District, Beijing 101100, China
  • Supported by:

     the Special Research Fund for Health Development in Tongzhou District of Beijing. No. TWKY-2016-PT-01-08

摘要:

文章快速阅读:

 

文题释义:
骨水泥弥散体积:是指骨水泥注入椎体后沿骨小梁间隙及骨折线弥散,黏合骨小梁及其包绕的空间,而形成的一种由骨水泥、骨小梁、骨小梁间隙共同构成的三维空间结构。因此,骨水泥在椎体内良好的弥散是重建骨折椎体生物力学稳定性的必备条件,对于骨质疏松性压缩骨折的椎体来说,通过骨水泥的填充,仅仅需要将其强度和刚度恢复至骨折前水平即可,过大的强度和刚度会造成相邻椎体应力增大,加速相邻结构的退变,甚至导致应力性骨折。
经皮椎体成形的不良反应:总体可分为两大类:第一类为骨水泥渗漏的相关并发症,如神经功能损伤、肺栓塞等;第二类为椎体成形后生物力学发生改变的相关并发症,如手术椎体再骨折、相邻椎体再骨折、相邻间盘加速退变等。如何把握骨水泥注入的剂量,既能保证术后良好的疗效,不发生骨水泥渗漏,又能获得理想的骨水泥弥散度,即重建骨折椎体的生物力学平衡,目前观点不一。
 
 
背景:在椎体成形治疗中,如何把握骨水泥注入剂量,获得满意的骨水泥弥散度,重建骨折椎体的生物力学平衡,目前没有统一定论。
目的:探讨在椎体成形治疗中注入小剂量骨水泥的弥散程度。
方法:将18只羊随机分为3组,均获取T12、L1、L2椎体,制备压缩性椎体骨折模型,A组T12、L1、L2椎体通过双侧椎弓根注入上下相邻椎体体积平均值15%的骨水泥,B组T12、L1、L2椎体通过双侧椎弓根注入上下相邻椎体体积平均值20%的骨水泥,C组T12、L1、L2椎体通过双侧椎弓根注入上下相邻椎体体积平均值25%的骨水泥。通过术后CT影像学表现观察骨水泥弥散情况,进行多个独立样本的秩和H检验,比较3组骨水泥弥散程度是否存在区别。

结果与结论:3组骨水泥弥散程度无差异,弥散优良率均在80%以上。结果说明在椎体成形治疗中,向压缩骨折椎体内注入小剂量骨水泥,即上下相邻椎体体积平均值的15%,亦能达到良好的弥散度,恢复椎体生物力学的稳定性。

ORCID: 0000-0002-2842-4927(孙海波)

关键词: 生物材料, 小剂量骨水泥, 椎体成形, 骨水泥弥散度, 动物实验,

Abstract:

BACKGROUND: During the percutaneous vertebroplasty, the optimal dose of bone cement that can bring favorable cement dispersion and remodel the biomechanical balance of the fractured vertebrae remains controversial.

OBJECTIVE: To investigate the dispersion degree of small dose of bone cement in vertebroplasty.
METHODS: In this experiment, 18 sheep selected with the same condition were randomly divided into three groups (group A, group B, group C), 6 in each group. A model of thoracolumbar vertebral compression fracture (T12, L1, L2) was made in each sheep. The injected volume of bone cement in groups A, B, C was 15%, 20%, 25% of the average volume of adjacent vertebral bodies, respectively. Postoperative CT images were used to evaluate the bone cement dispersion. Dispersion degree of bone cement among the three groups was compared by the Kruskal-Wallis test.
RESULTS AND CONCLUSION: There was no statistical difference in the dispersion degree of bone cement among the three groups, and the excellent and good rate of dispersion was over 80%. To conclude, the optimal dose of bone cement injected into the fractured vertebra is 15% of the average volume of adjacent vertebral bodies, which can achieve good dispersion degree and restore the biomechanical stability of the vertebral body. 

Key words: Vertebroplasty, Diffusion Magnetic Resonance Imaging, Animal Experimentation, Tissue Engineering

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