Thunder guard Russell Westbrook had arthroscopic surgery on his right knee Friday and will be out through the All-Star break.

It is the third surgery that Westbrook has undergone since tearing his lateral meniscus in April.

The latest setback comes as a surprise, but the cause is much like the second procedure the All-Star point guard needed on Oct. 1. Recent swelling in the knee called for the scope to be administered.

Westbrook had been getting the knee drained regularly to alieve swelling. But when the swelling kept reappearing, it was determined that the procedure would be necessary.

Westbrook had not been experiencing any pain and was producing at an extraordinary level, with averages of 21.4 points, 6.9 rebounds and 8.1 assists in 14 December games. In his last game, a 29-point road win over New York on Christmas Day, Westbrook became only the fifth player in NBA history to record a triple-double on Christmas.

In 25 games this season, Westbrook is averaging 21.3 points, six rebounds and seven assists.

Third-year point guard Reggie Jackson is expected to again start in place of Westbrook.