Two hazard periods were detected with regard to the risk of fractures and luxations in school aged children. The first one coincides with the beginning of school attendance and the second one falls into puberty in which the pubertal growth deceleration period brings more hazard if compared with the pubertal growth acceleration period. The findings of our study imply that different degree of physical status of a child, its physical activities and their types may effect the incidence of the fractures and luxation among schoolers. In that respect, a low physical ability of the schooler may counteract with an excessive physical loading upon which a child or a pubescent might be exposed during physical training. There is no doubt that our proposal of the potential linkage of developmental determinants of child growth and injury incidence requires futher research and studies which will enable an appropriate intervention in the field of injury prevention.

        Key words: school aged children, somatic growth and development, injuries, fractu¬res, luxations