Buckle fractures are most commonly seen in children due to the softness of their bones. Children tend to be very active which can lead to accidental falls that result in broken bones or buckle fractures. Sometimes a fall from a short distance such as the top of the stairs, or from a moderate height like falling off of a swing can result in a buckle fracture.
Children have soft bones but they also tend to have less fat and muscle to protect their bones from damage in the event of a fall. Adults are less prone to buckle fractures because their bones are completely hard. When an adult falls it will either result in a simple bruise or a total break of the bone.
Most falls are accidental and there is no way to anticipate or prevent a buckle fracture in these situations. Careful attention during play or when involved in contact sports is key to buckle break prevention.