Hart has played in every game for the 7-1 Boilers and has been a key offensive contributor off the bench. He averages 8.4 points and 1.9 rebounds in 17.0 minutes. He's the team's third-leading scorer behind E'Twaun Moore and JaJuan Johnson.
“John has made tremendous strides during his time at Purdue,” coach Matt Painter said in a university release. “It's difficult to see him hindered by something out of his control. The No. 1 priority now is to get him healthy so he can come back stronger than before and continue to help our team.
The No. 22 Boilers already are without forward Robbie Hummel, who will miss the season because of a knee injury. Swingman D.J. Byrd has an injured shoulder and played only two minutes in Saturday's victory over Alabama.
The earliest Hart could return would be mid-January and it might be February.
“By having this surgery, my goal is to be 100 percent ready to help the team down the stretch,” Hart said. “I'm going to help my teammates any way I can during my rehab. I'm looking forward to come back and help the team win.”