Their logic was it was Karma for Franzen's supposedly intentional knee on knee hit with Crosby in game seven.
He sprained his knee. Tearing a knee ligament let alone 2 is a huge deal for a pro athlete. There is no guarantee you will make a full recovery from a injury like that. The knee will also be more vulnerable to future injuries/complications. Its not like breaking a bone and you can just wait for it to heal then away you go like nothing happened.
Kronwall had knee surgery before the 2005-2006 season and missed almost the entire season.
Detroit Red Wings Oct 1, 2005, 12:00 AM EDT DETROIT (AP) - Detroit Red Wings defenceman Niklas Kronwall will undergo surgery on his left knee and will be out four-to-six months, general manger Ken Holland said Friday.Kronwall, 24, was injured when Colorado's Dan Hinote hip-checked him along the boards in an exhibition game Tuesday night. Holland said Dr. William Clancy will perform the surgery in Aspen, Colo., after the swelling in Kronwall's knee goes down in two or three weeks. Clancy examined Kronwall on Friday.Kronwall was slated to be one of Detroit's top four defencemen this season.