The 51-year-old funnyman injured himself 12 years ago while playing the sport, but was advised by a doctor to wait to have the surgery and instead treat the injury with painful twice-yearly medical shots.
He finally scheduled the operation for October (13), but the actor refused to do any research beforehand because he was afraid he would not go through with the procedure, reported Huffington Post.
"I thought, if I watch this (research videos), if I actually know what's going to happen to my body, I'm not going to do this. I just found a good doctor and went ahead with it... Because essentially what they are doing is dislocating your hip, they're cutting it out and they're putting a different one in. So it's fairly traumatic to your body," Carell said.
Despite his fears about the procedure, Carell said the surgery went well and he is even planning to return to hockey next year.
"Since then, it (his hip) has been fantastic. I am going to start (hockey) in the new year," he said.