"I'm eager because I'm bored of the same stuff," Hart said.
Hart had a procedure on Jan. 25 in which the knee joint surface was debrided -- a process in which the surgeon induces bleeding around an imperfection to induce the body to fill in the gap. Hart also had a small meniscus tear repaired.
It's the imperfection -- Hart again referred to it as a microfracture -- that will be the focus of Friday's scan. Typically, a follow-up MRI is not scheduled until two months post-surgery, but Hart is having his after six weeks.
"I'm kind of a guinea pig because I've been bugging them a lot," Hart said. "I told them if they wouldn't do [an MRI], I'd go do it myself and bring it in and have them look at it.
"Even if it's not favorable, at least I'll know. I'd rather get it done just in case I can start doing more. I want to know if I can do that."
Hart is a notoriously fast healer and said the knee feels "great," but he expressed caution. Even with good news from the MRI, he is three-to-four weeks away from any baseball activity.
A good result would being another perk: Hart would be able to drive a car again. That would help, considering his driver in recent weeks, fellow first baseman Mat Gamel, will undergo a knee surgery of his own on Friday for a torn ACL. Gamel will stay in Hart's guest house during the early stages of his rehab.
Adam McCalvy is a reporter for MLB.com. Read his blog, Brew Beat, and follow him on Twitter at @AdamMcCalvy. This story was not subject to the approval of Major League Baseball or its clubs.