Vikings' DE Robison undergoes arthroscopic knee surgery
MINNEAPOLIS -- The Williams wall isn't the only part of the Minnesota Vikings' front four that might be missing this week.
Coach Brad Childress confirmed that backup defensive end Brian Robison had arthroscopic knee surgery Tuesday. Robison left last Sunday's game against the Bears for a brief time after getting hurt, but he later returned after limping off the field.
Childress declined to declare Robison out for this week's game against winless the Detroit Lions, saying "people ...
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