Denver Broncos cornerback Kayvon Webster underwent surgery Friday on a fractured right thumb and is expected to miss a Dec. 22 road game against the Houston Texans.Webster was injured while tackling San Diego running back Ryan Mathews early in the third quarter of the Chargers' 27-20 victory on Thursday night in Denver. The rookie played the rest of the game with the thumb wrapped."It's not season-ending," Broncos coach John Fox said Friday. "We'll just see how he works back."Webster could be back for the regular-season finale against the Oakland Raiders and the playoffs, but he would play with a cast on the hand.The Chargers threw in Webster's direction on numerous occasions."Kayvon is a young player that is a good player," Fox said. "Every time they go out there, there are lessons learned. He'll get better for it."Webster, a third-round pick in the 2013 NFL Draft, has played in all 14 games and started two this season. He has 41 tackles, including 37 solos, 10 passes defenses, one forced fumble and one interception.