Tuesday's health and safety news from the world of football: at the broad implications of the signing offensive lineman , who was released by the after a league-sanctioned investigation found he helped to Stephen Drew Jersey create a culture of locker room hara sment. it has signed a five-year deal with the NFL to analyze player injuries and trends. at a new concu sion management app that was developed by University of Michigan researchers. at the new smart mouth guards the University of Kansas will use this year. why stats show girls suffer concu sions at a higher rate than boys. it will host a traumatic brain injury conference in Nashville on March 17. -- Bill Bradley, contributing editor Steve Cishek Jersey