家兔骨折加压愈合的实验研究

A Study of Healing Effect of Nut-Stress on the Artificial Fractures of Experimental Rabbits

采用24只家免,人工骨折后随机分不加压的对照组和用体重的1、2、3、4、5倍的力进行骨折加压实验的5组,而后通过骨断端的稳定性、6周后的步态、X光片、钙盐沉积及弯曲强度等6项愈合指标判定。结果以体重的3倍及4倍加压骨折愈合最佳,得出家兔骨折加压最佳应力值:σ=3.45MPa。

Twenty—four rabbits, after artificial fracture, were randomly allocated into the nut—stress control group and the five groups in which the forces of one times. two times, three times, four times and five times of their body weights were respectively adopted to do the experiment of nut—stress on the artificial fractures. Judging from the 6 healing data of the stability of the broken ends, the gaits in the sixth week, x—ray examination, histology the calcium deposition and curve intensity, it proved that the healing effect is the best favorable under the compression of three times and four times of body weights and that the best shearing stress of nut—stress on the artificial fractures of the rabbits:σ=3.45MPa