To tease that out that data, the researchers looked at the accompanying "narrative" (notes recounting the incident that led to the injury) from 600 cases. Of those, 94 percent involved lower leg injuries. This is important, because that's not how a kid falling off a slide solo would usually get hurt. If a child tumbles while climbing a slide's ladder, she's likely to injure her head or face—or her arms, if she reaches out to break her fall. If the injury happens while the slide is in progress, hands and faces are still the most logical injury site. A kid whipping forward off of the end (or falling off the side edge mid-slide, if he's really unlucky) is still likely to go down on his head or arms.