Concussion risk in high school football is greater for younger players and on practices on turf-based surfaces, according to a study presented at the American Orthopaedic Society for Sports Medicine Annual Meeting. The epidemiological study examined high school football concussion data in male players aged 14 to 18 years at 1,999 U.S. high schools between 2012 to 2017. Rates of injury decreased from 2012 to 2016 in both practices and games. The injury proportion ratios decreased by year from 2012 to 2016 with an increase in 2017. More concussions occurred in games (51.8%) than during practices (48.2%). Athletes aged 14, 15 and 16 years were at a greater risk for concussion compared players aged 17 and 18 years.