中国组织工程研究 ›› 2010, Vol. 14 ›› Issue (39): 7268-7272.doi: 10.3969/j.issn.1673-8225.2010.39.012

• 骨科植入物 orthopedic implant • 上一篇    下一篇

骨延长速度对成骨过程的影响

常  非,于庆巍,刘光耀,王金成    

  1. 吉林大学白求恩第三医院骨科,吉林省长春市 130033
  • 出版日期:2010-09-24 发布日期:2010-09-24
  • 通讯作者: 王金成,博士,教授,吉林大学白求恩第三医院骨科,吉林省长春市 130033 jinchengwang@hotmail.com
  • 作者简介:常非☆,男,1975年生,吉林省辽源市人,汉族,2007年日本筑波大学毕业,博士,主治医师,主要从事骨及软骨组织工程研究。ccfei_cn@hotmail.com
  • 基金资助:

    教育部博士点基金资助课题(200900611 20081);吉林大学新教师科研启动基金资助课题602959)。

Influence of bone elongation speed on osteogenesis

Chang Fei, Yu Qing-wei, Liu Guang-yao, Wang Jin-cheng   

  1. Department of Orthopedics, Bethune Third Hospital of Jilin University, Changchun  130033, Jilin Province, China
  • Online:2010-09-24 Published:2010-09-24
  • Contact: Wang Jin-cheng, Doctor, Professor, Department of Orthopedics, Bethune Third Hospital of Jilin University, Changchun 130033, Jilin Province, China jinchengwang@hotmail.com
  • About author:Chang Fei☆, Doctor, Attending physician Department of Orthopedics, Bethune Third Hospital of Jilin University, Changchun 130033, Jilin Province, China ccfei_cn@hotmail.com
  • Supported by:

    the Doctoral Foundation of Ministry of Education, No. 20090061120081*; the New Teacher Scientific Research Foundation of Jilin University, No. 602959*

摘要:

背景:骨延长过程的影响因素很多,到目前为止仍有好多问题尚未明确。延长速度是影响骨延长进程的一个重要因素,对其进一步研究将会有助于对骨延长过程的理解。
目的:观察延长速度对骨延长成骨作用的影响。
方法:在大鼠左侧股骨中部截骨后,安装单边外固定架予以固定。从术后第7天开始,对2组动物分别进行为期2周速度为0.5 mm/d或1 mm/d的骨延长。于术后第21天将动物处死获得标本,采用影像学、骨密度测定、延长部类骨组织硬度测定及组织学评价来定性、定量检测新生骨组织。
结果与结论:术后第21天,1 mm/d延长组大鼠的骨密度和类骨组织硬度虽高于0.5 mm/d延长组,但差异无显著性意义。组织学表现上,0.5 mm/d延长组中见到螺旋状排列的纤维束,但在1 mm/d延长组中则基本消失,变为近似直行的纤维束。两组均未见到骨不连或过早骨化等并发症。提示采用1 mm/d的延长速度,会加快骨延长,缩短治疗时间,不会影响成骨过程而导致治疗失败。

关键词: 骨延长, 成骨, 外固定, 速度, 大鼠

Abstract:

BACKGROUND: Bone elongation is a complicated process that remains poorly understood. Elongation speed is a major factor that affects the bone consolidation. Further research could provide more information and help understand bone lengthening.
OBJECTIVE: To investigate the influence of elongation speed on distraction osteogenesis.
METHODS: Following osteotomy at the middle segment of rat left femur, the external frisket was installed for fixation. The lengthening protocol included a seven-day latency period, followed by an incremental lengthening of 0.5 mm/d or 1 mm/d for 2 weeks. The animals were sacrificed 21 days after the operation. Bone hardness and bone mineral density was determined. Histological examinations were also performed.
RESULTS AND CONCLUSION: No statistical difference was observed in bone mineral density and hardness between the 0.5 mm group and the 1 mm group on 21 days after the operation. Helix fibers were observed in 0. 5 mm/d group, while more straight fibers in 1 mm/d group were detected. No complication was observed in both groups. Results indicated that 1 mm/d elongation can accelerate the procedure, shorten the treatment time without further complications.

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