Broken leg is 2500$ on average. And local kindergarten was unequipped to have injured kid, so parents scrambled hard to cover work and childcare too.
Most kids don't go to playground after school, because nowdays parents are expected to go with them and parents don't like that or wants to cook. Playgrounds are super boring for parents. When kids are big enough to go alone, they don't know what to do there.
Kids over 8 mostly want to either play elaborate stories or talk.
"Naturally" there are no playgrounds, gardens at best and risk there is from tools. When I take kids to forest, there are only rarely dangerous situations. Most trees are impossible to climb at, exceptions are the ones with fruits in the gardens. The ground is soft.
The kind of injuries that happened in old playgrounds like stucking head somewhere or strangling on rope or hand stuck in seesaw don't happen.