Campbell suited up for the Hawks in their 3-0 victory over the Nashville Predators in Game 4 of their Western Conference Quarterfinal series. The series is tied 2-2.
Campbell said he made the decision to play the night before the game because he felt his team needed him. It needed some kind of spark and Campbell's presence helped provide one.
"If we were ahead in the series and fine, I don't think I'd be playing," Campbell said. "They gave me an option of what I wanted to do and I went with it and talked a little bit with people and made the decision, 'Ok, I'm doing it.' It was a decision I made."
Campbell said he was a little foggy early and called it a huge challenge. Chicago coach Joel Quenneville was happy to have him back.
"We liked the speed he provides and exiting of the zone, his puck possession game. First game in a long time for him, he did a remarkable job," Quenneville said.
Campbell played 14 minutes, 4 seconds in his first action of the postseason and was credited with one hit and one blocked shot. He played with forwards Adam Burish and Bryan Bickell. The three take the place of Colin Fraser, Ben Eager, and Jordan Hendry.
Campbell broke his clavicle and ribs when he was shoved into the boards by the Capitals' Alex Ovechkin. Ovechkin was suspended two games for the hit.
The Blackhawks initially believed Campbell would miss 7-8 weeks. His return falls just short of six weeks.
"If it was eight weeks down the line then that would be better but being down 2-1 in the series, I felt like I needed to come back and help out," Campbell said.
Jesse Rogers covers the Blackhawks for ESPNChicago.com. The Associated Press contributed to this report.