A–Z Glossary

Numbness and tingling

Tingling is a pins-and-needles sensation that can occur when nerves are compressed or irritated.

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Choosing the right backpack size and fit for a child

Choosing the right backpack size and fit for a child

Why backpack size and fit matter A backpack changes how weight is distributed across the musculoskeletal system. When the load hangs low or away from the body, it creates a longer lever arm, increasing the effort required from the trunk and shoulder muscles to maintain balance. A child may compensate by leaning forward, rounding the […]

Signs that a child’s backpack is too heavy

Signs that a child’s backpack is too heavy

Why backpack weight matters Children’s bones, joints, muscles, and connective tissues are still developing. A backpack that is too heavy can increase mechanical demand on the spine, shoulders, neck, hips, and lower limbs. The issue is not only the absolute weight of the bag. Load distribution, backpack design, strap adjustment, the child’s strength and body […]