Pelicans star Williamson sidelined through NBA All-Star Game
Williamson is averaging 26.0 points, 7.0 rebounds and 4.6 assists a game in 29 contests for New Orleans, but he has not played since January 2 due to the injury.
At 29-27, the Pelicans rank eighth in the Western Conference.
Williams is expected to be reevaluated after the NBA All-Star Game break.
The news comes two weeks after the 22-year-old US standout was named to his first NBA All-Star Game starter spot and his second time on the elite roster.
New Orleans made Williamson the top pick overall in the 2019 NBA Draft.
Williamson missed the entire 2021-22 season with a broken right foot. In the 2020-21 campaign, Williamson averaged 27.0 points, 7.2 rebounds and 3.7 assists for the Pelicans.