The Pacers said McConnell will remain in a cast for at least 10 to 12 weeks after having the procedure to repair a torn scapholunate ligament at the Hospital for Special Surgery in New York. The team said it would re-evaluate his status and estimate a timeline for his return after that period.
McConnell suffered the wrist injury during the Pacers' loss to the Atlanta Hawks on Dec. 1. He has missed two games since.
The 29-year-old McConnell, in his seventh NBA season, is averaging 8.4 points, 4.8 assists and 3.3 rebounds in 24.2 minutes per game.
He is in the first season of a four-year, $35.2 million deal signed in August.