Effect of distraction on reparative osteogenesis

Abstract

Distraction regenerates, forming in adult dogs in the process of leg elongation according to Ilizarov, are studied, using methods of light and electron microscopy and roentgen probe electron microanalysis. The unknown before property of regenerating bone tissue to respond to distraction by volumetric-and-spatial organization change is revealed. It is established, that distraction transforms bone lacunae to primary osteons. Peculiarities of zonal structure of the distract ion regenerates are studied as well as the process of formation of the primary osteons in them. It is shown, that distraction gives vector character to angiogenesis processes. It is established, that ingrowth of vascular loops and vascular buds, surrounded by proliferating osteogenous cells, towards each other makes osteogenesis, oriented along distraction vector, available.