Introduction: Changes in the loading of inferior extremities appear in the growth and development of the child body and often are irreversible. They need diagnosis and correction in order to prevent harm of other segments. Materials and methods: we examined loading of the lower extremities in 48 children (26 girls and 22 boys) during the school spinal screening. we defined degree of the foothold of the lower limbs in statics, by weighting with the floor scales embedded in a special support. Measurements were carried out in three minutes, with appreciation of loading indicators on the left and right leg. Results: The children were divided into two groups. In the first group (n = 32) the difference in the loading of the legs was up 10%. In the second group (n = 16), this difference was more than 10%. Children in the second group had poor posture (round back, hunch back, scoliotic posture, etc.). These deviations were combined with various kinds of bone diseases of the lower limbs: seven children had in history hip dysplasia, knee deformations, and different types of foot pathology (flat feet, flat-valgus, flattened arch). Analysis of school health records showed that 9 children hadn\t problems with the musculoskeletal system, but at the time of the examination they presented incorrect posture. Conclusions: Children with the differences in the loading asymmetry of the legs more than 10% were included in the group of risk due to incorrect posture and the high probability of scoliosis. Identification of major deviations in the development of the musculoskeletal system requires a more careful clinical and instrumental examination.