Terry got injured in the first half and was ruled out at halftime after X-rays showed the break, finishing with eight points and four assists in 16 minutes. Terry told team officials he wasn't sure when the injury occurred. His condition will be evaluated on Monday.
The Mavericks will certainly miss their high-scoring sixth man.
"He almost had tears in his eyes, that's how much he cares," Nowitzki said of Terry. "We told him we got this one for him and we would hold down the fort. He's the best sixth man in the league and we'll miss him dearly."
Nowitzki missed nine of his first 10 field-goal attempts before getting untracked, making his final three shots of the second quarter and scoring Dallas' last six points.
"It was crazy," said Joakim Noah, one of several Bulls who tried to defend Nowitzki. "He misses nine of 10, then hits nine, 10 in a row, tough shots. I was watching some of his shots and thinking there's no way it's going to go in."
The Bulls took a 50-48 lead into the break.
Chicago got off to a 13-4 start capped by consecutive 3-pointers from Kirk Hinrich and the Bulls carried a 24-20 lead into the second quarter. Nowitzki was 1-for-7 from the floor in the opening quarter.
Bulls forward Drew Gooden continues to sit out with a left groin strain. He's expected to consult with a sports hernia specialist next week in Chicago. ... Dallas has won 19 of its past 22 games against Chicago.