Lewis, a 5-11, 215-pounder from Bloomfield, CT., will undergo surgery in the near future to repair the damage. He is Iowa's leading rusher with 200 yards and a touchdown this year. He has 1,150 career rushing yards.
"Losing Jermelle is extremely disappointing for all us," said Ferentz. "He hasn't had a lot of good luck during his college career and our first and foremost thoughts are concerning his welfare. He's worked awfully hard to get back from previous injuries and it's hard to see him suffer this setback."
The loss of Lewis means the Hawkeyes have lost what were, their top three running backs (according to pre-season depth charts). Marcus Schnoor and Albert Young both went down with season-ending knee injuries earlier in the season.