Romo's 2015 season was wrecked by collarbone woes. He missed seven games after fracturing the collarbone in a loss to the Eagles. His return lasted less than two games before he re-injured the collarbone in a blowout loss to the Panthers. The Cowboys sputtered without their star passer and finished 4-12.
It is the same collarbone that Romo broke in a Monday night game against the Giants in 2010. That injury cost Romo the final 10 games of that season.
Romo had initially leaned toward having a metal plate inserted to help supported the weakened clavicle. Ultimately, the decision was made to undergo Mumford surgery, a procedure in which a portion of Romo's collarbone is shaved down to help alleviate stress and irritation.
Needless to say, the Cowboys and Romo need this latest surgery to do the trick. If Romo were to suffer another clavicle injury in 2016, you'd have to ask very real questions about whether the quarterback is facing a career-ending injury.