While it is not possible to enumerate a list of specific causes for the emergence of scoliosis and spinal disorders, several factors (biomechanical, constitutional and metabolic) that favor its appearance.
These include improper use of backpacks by children is perhaps the best known. Many scholars have been studying its effects on vertebral column of boys growing already very susceptible to back problems . Although they are the best way to carry a load, backpacks have excessive weight. In addition, it tends to be wrong the way children carry them: generally not well distributed weight. 
Thus, the tensions that are created can damage the muscles and the appearance of abnormalities in posture. On the contrary, if used properly, backpacks are supported by the strongest muscles in the body: the abdominals and found on the back. In this way, stabilize the chest and torso, shaping into a correct posture, which firm and keeps the spine straight.
Backpacks and back problems for kids
The backpack is being used correctly when:
"It takes two hanging straps. Put all your weight on one shoulder (as is common in children) Drop the body and makes the back stoop. The pain in the dorsal and lumbar, shoulders and neck that occurs as a result may develop functional scoliosis.
-Your weight does not exceed 10 kilos. Excess weight causes the rounding of the shoulders and grow the natural curvature of the spine. As the body's resistance varies with the size the child, the weight limit of the backpack should be between 15 and 20% of body weight who load.
Her straps are wide. Those who are too thin to exert much pressure on his shoulders, affecting nerves and causing pain in the collarbone. They can also complicate the circulation and cause numbness in the area.
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