Andrews, a Birmingham, Ala.-based orthopedist for elite athletes, says preventing Brady's infection was nearly impossible, no matter how good the doctors are.
Andrew spoke as part of a medical panel on Wednesday that said doctors are seeing more children - especially girls - suffer knee injuries as they spend more time playing sports without time off.
Brady was injured in the Patriots' 2008 season opener and has not given a timetable for his return to the field.
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A boy was struck on the head by Chris Carter’s broken bat during the New York Yankees’ game against the Kansas City Royals on Wednesday night With Didi Gregorius on second base and no outs in the seventh inning, Carter’s bat shattered on a 3-1 fastball from Matt Strahm.