From The Washington Times: 

Lawn mowers injure 9,400 under age 20

An average of 9,400 children and teens are treated in U.S. hospital emergency departments annually for lawn-mower injuries, a U.S. study finds.

Researchers at the Center for Injury Research and Policy in the Columbus Children’s Research Institute at Columbus Children’s Hospital also find that 25 percent of the injuries incurred by children younger than 5 years old.

The study, published in the journal Pediatrics, also finds that 78 percent of the injuries were sustained by boys. Forty-one percent of the injuries were lacerations, followed by soft tissue injuries at 21 percent, 15 percent burns and 10 percent fractures.

(more here)