Warburton set to miss Six Nations
The 29-year-old back row forward – who captained the Lions to the thrilling 1-1 Test series draw with world champions New Zealand earlier this year – took the decision to have the operation after consulting with the WRU.
"With Warburton currently sidelined with a neck injury, the proactive approach was taken with a view of ensuring he returns to action fully fit. The recovery is anticipated between four-six months," read the WRU statement.
Warburton, who also led the Lions to a Test series win over Australia in 2013, said he was looking forward to returning to the fray.
"In close consultation with the WRU and Cardiff Blues [his club] we decided it would be proactive to have surgery now on a knee injury and I'm looking forward to returning to action fully fit," he added.
The Six Nations runs from February 3 to March 17 with the Welsh getting their campaign underway at home to Scotland.
Agence France-Presse
