Cardiff Blues confirmed on Tuesday Warburton is set to undergo a procedure to fix a “long-standing” issue.
The flanker will miss Tests against Australia, Georgia, the All Blacks and South Africa later this year, and is slated to return to training just a few weeks before the start of the Six Nations on February 3, when Wales welcome Scotland to the Principality Stadium.
53 – Sam Warburton is the only player to reach 50+ Test caps as a skipper before turning 29. Scalpel. pic.twitter.com/XJF3CPWzDS
— OptaJonny (@OptaJonny) September 12, 2017
Danny Wilson’s side are joint bottom of Conference A with Zebre and Cheetahs, who also remain without a point.