[Regeneration osteohistogenesis in the healing of gunshot fractures (an optical polarization analysis of the collagen fibers in the intercellular substance)].

Bone tissue intercellular substance was studied in healing of a tibial gunshot fracture in dog. The method of scanning polarization microscopy was used with cytospectrophotometer signal registration and the following three-dimensional computer reconstruction of indexes of the process which was monitored from days 15 to 120 of the experiment. By the end of the experiment optic anisotropy indexes of collagen fibres from proximal and distal bone fragments were 96 and 80 respectively as related to intact bone. Character of scanogrammes and increasing values of anisotropy indexes of fibrous component of the regenerate intercellular substance indicate changing and normalizing fibrillar architectonics of newly formed bone tissue on the site of preceding fracture and serve as one of criteria for regenerative osteogenesis phases.