Henrick Zetterberg, Sweden's current team captain, will miss the rest of the Sochi Olympics due to nagging back injuries. He has consulted the NHL doctors present in Sochi and seems like everyone is on board with the decision.
The article mentions that this may impact the Red Wings' post season, but obviously there's more going on in Hockeytown than just this. Z is headed home soon to get evaluated and see if surgery is required.
Kronwall will take his place as the new captain for Team Sweden.