Zac Efron's jaw surgery was actually due to an injury ... Zac Efron plays legendary pro-wrestler Kevin Von Erich in The Iron ...

For "The Iron Claw," in which Efron starred as famous ... The muscles aid with chewing and eating. Efron injured his jaw ...

The "A Family Affair" star has previously opened up about breaking his jaw in a fall at his home ... face," Men's Health reported. 'Iron Claw': How Zac Efron learned pro wrestling 'is not ...