Green sustained the injury while attempting to make a leaping catch over the middle in the third quarter and did not return in Cincinnati's 31-21 setback to the Carolina Panthers.
"At first when I did it I didn't feel anything," Green said, via the Cincinnati Enquirer. "I thought the air got knocked out of me and then I got up and I was like, 'This hurts a little bit.' I didn't feel anything pop or anything like that, so I should be fine. ...
"Oh, yeah. I'll be fine. I just fell awkwardly. I did the same thing in college."
Quarterback Andy Dalton struggled in Green's absence, throwing a total of four interceptions as the Bengals (2-1) fell for the first time this season.
"He's the best receiver in the league and when you have him on your team and he's not there anymore obviously it changes things," Dalton said.
Green, who has 16 receptions for 219 yards and four touchdowns this season, received his seventh consecutive Pro Bowl in 2017 after making 75 catches for 1,078 yards and eight scores.
The 30-year-old Green has recorded 572 receptions for 8,432 yards and 61 touchdowns in 105 career contests since being selected by Cincinnati with the fourth overall pick of the 2011 NFL Draft out of Georgia.