Pierce to miss road trip with knee injury

Celtics captain Paul Pierce underwent arthroscopic irrigation on his right knee Wednesday and is expected to miss the next two weeks, according to the team.

After a knee infection was discovered following Tuesday's win over the Indiana Pacers, Pierce underwent the procedure at New England Baptist Hospital Wednesday morning under the direction of team physician Dr. Brian McKeon.

"Paul felt fine after the game,'' Celtics president of basketball operations Danny Ainge told the Boston Globe. "He felt great. A few hours later there was swelling and pain, and so they put him through some tests [Wednesday] morning. Then they went in and they felt like they needed to clean out the infection. It's nothing structural, and it's a guess, but they are saying two weeks. I'm always worried when a player gets hurt, but the good news is there was no structural [damage].''

Pierce will not travel with the team on its four-game road trip that starts Friday with a Christmas Day showdown in Orlando and continues with three games out west.

"He had the knee rinsed and irrigated, and it will require some antibiotics," team owner Wyc Grousbeck told Comcast SportsNet, the television home of the Celtics. "It's nothing major at all, but it will take some time to come back from. He'll be out for a week, maybe two, and will definitely miss the four games on the road."

Pierce is averaging 18.2 points, 4.6 rebounds, and 3.7 assists per game this season. He scored 16 of his 21 points in the fourth quarter of Tuesday's come-from-behind triumph over the Pacers.

Pierce appeared at his usual postgame news conference and again in the locker room following the game, and did not appear to be any worse for the wear at that point.

Pierce appeared to be struggling over the first eight games in December, scoring more than 20 points in just one of those contests.

Pierce, a 6-foot-7 forward, has played in every game this season for the Celtics and is averaging a team-high 18.2 points. He is currently shooting a career-high 47.3 percent from 3-point land and is ranked fifth in the NBA. The Kansas product netted a season-high 33 points against the Knicks on Nov. 22.

Chris Forsberg covers the Celtics for ESPNBoston.com.