Placed on the injured reserve last week following a gruesome ankle injury, Denver Broncos center J.D. Walton is scheduled for surgery on Monday according to his representatives at ProLink Sports.

A 6'3, 305-pound offensive lineman, Walton was carted off the field in the second quarter against the Oakland Raiders in Week 4 after opposing player Jack Crawford rolled on his ankle while attempting to make a tackle. Walton, a third-year pro out of Baylor, suffered both a fractured and dislocated left ankle on the play and forced the Broncos to scramble to fill out their offensive line.

Unable to make what would have been his 39th consecutive start for the Broncos in Week 5, Walton's full timetable may become a bit more clearer after his surgery. And though a proven veteran like Dan Koppen was brought in to take Walton's role for the remainder of the year, Walton's unfortunate injury still should go down as one of the most frustrating occurrences of Denver's 2012 campaign:

Good thoughts going out this morning to JD Walton - surgery to repair injured ankle scheduled for today. Do the same #Broncos fans!

— ProLink Sports, LLC (@ProLinkSports) October 8, 2012