Dallas Mavericks All-Star forward Dirk Nowitzki had arthroscopic surgery on his right knee and will be sidelined some six weeks, the NBA team said Friday.
Germany's Nowitzki will miss the start of the regular season, but opted for the procedure after missing the last three pre-season contests because of swelling and pain in his right knee.
Nowitzki, an 11-time All-Star, played through the injury last season, still averaging 21.6 points and 6.7 rebounds while missing only four of the 66 games in the campaign shortened by a labor dispute.
In 1,055 career games with Dallas, the 34-year-old has averaged 22.9 points and 8.3 rebounds.
The Mavericks, who won the first NBA championship in franchise history during the 2010-11 season, was swept in the first round of the playoffs by the Oklahoma City Thunder.
Dallas open the season on October 30 against the Los Angeles Lakers.