Spurgeon (undisclosed) was placed on injured reserve Thursday, per the NHL media site.
Spurgeon's move to IR cleared the roster spot for the Wild to acquire Cameron Crotty off waivers from the Senators. The Wild have dealt with a number of injured on the blue line this season. Spurgeon is considered week-to-week and won't be eligible to return until Tuesday's game versus the Flyers at the earliest, though it sounds like his absence will stretch beyond that.