Scooter injury: An injury sustained on a scooter, a foot-operated board mounted tandemly on two wheels with an upright steering handle attached to the front wheel. The wave of popularity of scooters has created a major new cause of pediatric injuries and a significant health hazard to children. Most injuries occur shortly after children first begin to use a scooter. Younger children suffer the most severe injuries. Head trauma is a significant hazard. (The child should always wear a helmet.) Other scooter injuries include lacerations (cuts) and fractures (broken bones).