Thomas was injured in Seattle's overtime victory against Green Bay a week ago for the NFC championship. He left the game but returned, and says there is no way he won't be on the field to face New England in the Super Bowl.
Thomas also promised he was "still fearless" and that tackling the likes of star tight end Rob Gronkowski will be a challenge he will meet.
If his mental approach is strong, Thomas adds, his physical status won't be an issue.
Seattle's other All-Pro defensive back, cornerback Richard Sherman, has an elbow injury that he also dismissed as a non-factor for next Sunday.
