A 5-year-old Snowboarder with Boot Top Tibial Diaphysis Fracture.

A previously healthy 5-year-old boy presented with an oblique fracture of the midtibial diaphysis at the top border of the snowboarding boot after falling from a standing position with both feet strapped to his snowboard. This case illustrates a snowboarding-specific variant of the torsion-tension boot top injury classically described in skiers. Unlike most snowboarding-related lower-extremity injuries, this fracture occurred in the absence of high-speed trauma or collision.