Since the beginning of the 2023-2024 academic year, I’ve seen a few school children between the ages of 7 and 16 for back, neck, and shoulder pain that was caused by wearing backpacks that were either too heavy or incorrectly worn. When walking along a flat surface, a backpack that weighs 10 pounds, translates into a force of 72 pounds on a child’s spine. If that child climbs an incline...