The 34-year-old will bring the curtain down on his playing career after Saturday's showpiece, and Borthwick says that he has overcome a pectoral injury to participate in the clash.
"I'm good and ready to go this weekend," he told Sky Sports News.
"It wasn't a great situation, but I was fortunate that here we've got a great medical team.
"I've thanked them personally, so I'll thank them publicly, they've helped me not just in this last fortnight, but throughout my time here."
Earlier this week it was revealed that the skipper would take up a coaching role in Japan following his retirement.