Summary: What is the role of allografts in orthopaedic surgery? Dr. Geier also discusses the injuries of Carolina Panthers quarterback Cam Newton, Houston Texans linebacker Jadeveon Clowney, Arizona Cardinals running back Andre Ellington, the Big Ten Conference having an athletic trainer in the booth to monitor concussions, and Kansas City Chiefs safety Eric Berry. Plus in the Ask Dr. Geier segment, he answers your sports medicine questions.