Hall cut the bottom of his right foot Wednesday afternoon while walking in grass outside his residence in Columbus. He had surgery Friday at the Ohio State University Medical Center.
"This is an unfortunate accident to a really fine young man," Ohio State head coach Urban Meyer said. "He's handling things well, though. He'll be in a non- weight bearing cast for about six weeks and then he'll rehabilitate the injury for at least four weeks after that."
Hall has 817 career rushing yards with five touchdowns and has also caught 21 passes out of the backfield for 202 yards and four more scores. His 2,513 all- purpose yards ranks 26th all-time at Ohio State.
Ohio State's first game of the 2012 season is set for September 1 against Miami of Ohio.