Magnetic resonance imaging-documented chondral injuries about the knee in college football players: 3-year National Football League Combine data.

Purpose: To evaluate the incidence and risk factors for knee cartilage injury in elite college football players invited to attend the US National Football League (NFL) Scouting Combine over a 3-year period.

Methods: All players entering the NFL Scouting Combine (National Invitational Camp) from 2005 through 2007 were evaluated. "At-risk" knees underwent magnetic resonance imaging (MRI), and the results were evaluated for chondral injuries.