[骨折部位轴向骨折块间梯度加压下骨电位的实验研究]

[An experimental study on bone potentials at fracture site with axial interfragmental gradient compression].

作者信息

Zhang Y, Liu L, Shu S, Li Z, Zhong G

机构信息

Department of Oral and Maxillofacial Surgery, College of Stomatology, Beijing University of Medical Sciences.

出版信息

Hua Xi Kou Qiang Yi Xue Za Zhi. 1999 Feb;17(1):20-2.

PMID:12539313

Abstract

OBJECTIVE

To evaluate the mechanism of stress generated potentials in compressive fixation leading to the primary healing.

METHODS

Eighteen fresh sheep tibiae were divided equally into three groups, and all specimen were fractured artificially and imposed "prestressing" at fracture sites with tension device and plate, meanwhile stainless wire tension band was used in the place opposite to plate. The interfragmental pressure was exerted when applied plates, which were 98.62 +/- 19.74 N, 137.93 +/- 8.13 N and 169.20 +/- 11.33 N. Bone potentials at fracture sites were recorded with reference to the potential measurement system by Friedenberg and Brighton (1966).

RESULTS

There was no significant statistical difference in bone potentials when made comparison between before and after compression fixation in each group and among groups of different axial interfragmental gradient compressions.

CONCLUSION

The mechanism of stress generated potentials may not exist in primary healing with compressive fixation.

摘要

目的

评估加压固定中产生应力电位导致一期愈合的机制。

方法

将18根新鲜绵羊胫骨平均分为三组，所有标本均人为骨折，在骨折部位用张力装置和钢板施加“预应力”，同时在钢板相对位置使用不锈钢丝张力带。应用钢板时施加的骨折块间压力分别为98.62±19.74 N、137.93±8.13 N和169.20±11.33 N。参照Friedenberg和Brighton（1966年）的电位测量系统记录骨折部位的骨电位。