[Fibrous osteodysplasia in forensic medicine traumatology].

Histo- and ultrastructure of pathologically changed bone tissue in fibrous dysplasia was under study (9 cases were analyzed). Histologically a fibrous dysplasia focus is represented by cellular fibrous osteogenic tissue with scanty primitive coarse-fibrous bone structures. Ultrastructural changes evidence that these structures are formed at the edge of previous bone beams. Inadequate intraperiod fine structure of collagen fibrils does not provide a strong connection between hydroxyapatite crystals. These shifts result in functional inadequacy of bone tissue in fibrous dysplasia, that should be taken into consideration when assessing the severity of injury to osseous organs.