We conducted a retrospective review of trauma patients under age 18 y in the Los Angeles County trauma database between 1992 and 2009 injured while riding bicycles. We examined the variables of age, gender, race, Glasgow Coma Score, Injury Severity Score, presence of head injury, presence of abdominal injury, and use of protective helmet.
During this time period, there were 44,187 injured children less than 18 y of age, and there were 1684 bike-related traumas with data on helmet use. Injury patterns did not change after the helmet law, with head injuries predominating.
The rate of helmet use did not change after California legislation, and head injury remains a major source of morbidity. Rates of abdominal injury聽over this time period did not change. Novel strategies are needed to increase helmet use in at-risk populations.