Ronnie Lott
The San Francisco safety badly broke his left pinky finger in a 1985 game against Dallas. He came out of the game briefly, but returned. He also played with the finger taped heavily in a season-ending loss to the Giants. After the season, doctors wanted to perform multiple procedures to restore full use of the finger, but the recovery time would have been lengthy. Instead, Lott chose to have the tip of his finger amputated.