Sam Warburton has been ruled out of the rest of the European season and Wales' June tour.
The flanker dislocated his shoulder in the closing moments of Wales' victory over Scotland in the Six Nations at the Millennium Stadium on Saturday.
Following MRI scans and consultations with specialists, Warburton will have an operation and is expected to miss several months of action.
He joins Leigh Halfpenny on the sidelines, after the fullback had successful surgery on his shoulder last week.
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