Terry was injured in the 0-0 draw with Fulham |
Terry will undergo surgery on Sunday and the fear for England and Chelsea is that he may face a lengthy lay-off.
The England captain is set to miss crucial Euro 2008 qualifiers at home to Estonia on 13 October and then away to Russia four days later.
Terry suffered the injury in Chelsea's goalless draw with Fulham on Saturday.
He took a blow in a challenge with Clint Dempsey early in the game and was taken off at half-time.
The club confirmed that Terry was not concussed and is expected to be released from hospital on Sunday.