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Experimental studies of bridge plate for the treatment of fracture

桥板治疗骨折的实验研究

基本信息

批准号：
02404060
负责人：
IKUTA Yoshikazu
金额：
$ 12.16万
依托单位：
Hiroshima University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (A)
财政年份：
1990
资助国家：
日本
起止时间：
1990 至 1991
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02404060/
关键词：
Fracture healing Plate Three point bending test Non decalcified section 非膜灰骨標本

项目摘要

Plate has a long history as an Internal fixature for use In the treatment of fracrure and has produced to date relatively stable results. It has thus established for ltsself a reputable position as a general internal fixature. however, as tlie plate Is closely attached to the bone surface in fixation with tlie use of conventlonal plate, blood flow of the bone Is disturbed, bringing rise to atrophy and thinning of the cortical bone. Farthermore, It has been pointed out that fixation with the use of plate may become a cause of non-union and refracture. The authors therefore designed a plate of a unlque shape which can fix the fracture site witilout having the plate closely attached to the bone surface. Briefly, a plate was developed with four cylindrical piers attached to the conventionally employed plate. This was named bridge plate. This was used as internal fixature of the fractured tibia of the rabbit and the results were examined mechanically and histologically. The results of this study showed that with the use of bridge plate the bending stiffness of the healing site of the fracture even at 3 months and 6 months after the procedure was greater when compared with that of conventional plate with no evidence of bone atrophy at the healing site under the plate and that there was remodeling of the cortical bone of adequate thickness. In addition, by microanglography an abundant blood flow was observed in the callus under the plate. It was evident these results that for fracture healing it is very Important that blood flow disturbance attributable to the plate should be minimized by fixing the fracture site with the plate not closely attached to the cortical bone.

接骨板作为骨折治疗的内固定物有着悠久的历史，迄今为止已经产生了相对稳定的结果。因此，它为自己建立了一个声誉良好的地位，作为一个一般的内部固定。然而，由于在使用常规板进行固定时，板紧密地附着在骨表面上，骨的血流受到干扰，导致皮质骨萎缩和变薄。然而，已经指出使用钢板固定可能成为骨不连和再骨折的原因。因此，作者设计了一种独特形状的接骨板，它可以固定骨折部位，而无需接骨板与骨表面紧密连接。简而言之，开发了一种板，其具有附接到常规使用的板的四个圆柱形墩。它被称为桥梁板。将其作为兔胫骨骨折的内固定物，并对其进行了力学和组织学检查。本研究的结果表明，与传统接骨板相比，使用桥接接骨板时，骨折愈合部位的抗弯刚度甚至在术后3个月和6个月时都更大，接骨板下愈合部位没有骨萎缩的证据，并且有足够厚度的皮质骨重塑。此外，通过微血管造影，在板下的骨痂中观察到丰富的血流。这些结果表明，对于骨折愈合而言，通过使用接骨板固定骨折部位，使接骨板不与皮质骨紧密连接，从而最大限度地减少接骨板引起的血流干扰是非常重要的。