The midseason 6 premiere of "The Walking Dead" shocked viewers when one of the main characters suffered a pretty nasty head injury. We spoke to Zachary Hickman, MD, the Assistant Professor of Neurosurgery at Mount Sinai Health System, to find out of someone would be able to live after this in the real world, let alone a zombie apocalypse. WARNING: Spoilers Ahead

Produced by Chris Snyder

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