This common household accident causes more that 150,000 emergency room visits each year and is one of the most commons causes of falls. Worn or improperly used ladders cause hundreds of thousands of serious injuries each year. To stay safe, make sure your ladder has slip-resistant rungs and feet. Inspect it for cracked uprights, split rungs or loose rivets. When using an extension ladder, make sure the bottom is pulled away from the wall by at least one quarter of the height you need to work at and never stand on the top rung of any type of ladder.