London - England flanker Chris Robshaw will miss the Six Nations after undergoing shoulder surgery that will keep him out of action for three months, his club Harlequins announced on Monday.
The former England skipper, 30, injured his left shoulder during Harlequins' 24-17 English Premiership defeat at Worcester on New Year's Day and was due to go under the knife on Monday.
It will keep him out of England's entire Six Nations title defence, which begins against France at Twickenham on February 4 and concludes against Ireland in Dublin on March 18.
"Chris Robshaw will undergo surgery on his left shoulder today to repair an injury sustained in the match against Worcester Warriors on New Year's Day," Quins said in short statement on their website.
"He is expected to be out of competitive action for around 12 weeks. Harlequins will provide relevant updates on his progress as appropriate."
Robshaw is the second England player to be ruled out of the tournament through injury in recent days. Last week, centre Manu Tuilagi was ruled out after suffering a knee injury while playing for Leicester in the English Premiership.