The former England international suffered the problem in Tuesday’s win over Crystal Palace.
England midfielder Fabian Delph returned to training on Friday as he recovers from a dislocated shoulder but he, Ron Vlaar, Philippe Senderos and Nathan Baker are all unavailable.
Leicester captain Wes Morgan is suspended for the match at Aston Villa in the Barclays Premier League on Sunday.
The defender was sent off against Liverpool and will sit out for a game at Villa Park.
David Nugent is a doubt with illness which has affected some of the squad but manager Nigel Pearson, who did not name others who were laid low, hopes any bug would have cleared by Sunday.