Coming soon to a worried parent near you: a sales pitch for a $1,000 football helmet that can monitor the precise location and severity of impacts to little Johnny's head. Leading helmetmaker Riddell plans to begin flooding high schools with take-home brochures this month and to start shipping this concussion-sensing gear to families in November. Says Riddell marketing chief Jim Heidenreich: "If people buy $1,000 drivers and $500 baseball bats, we hope they'll spend that kind of money on head protection."
The football field, to borrow a phrase from sports-injury researchers, is an impact-rich environment. Players frequently knock heads, but it's...