Olympic champion Adams out of Worlds

England's Nicola Adams during a boxing match at the 2014 Commonwealth Games in Glasgow, Scotland, on August 2, 2014 (AFP Photo/Adrian Dennis)

London (AFP) - Olympic champion Nicola Adams has withdrawn from the Women's World Boxing Championships in South Korea in November due to injury, it was announced Friday.

Adams, who recently added Commonwealth gold to her London 2012 title, is set to have surgery on a shoulder injury and is expected to be out of action for up to six months.

It means the British boxer has still to claim the one major title that has evaded her grasp following three consecutive world silver medals in 2008, 2010 and 2012.

Adams said: "I struggled through the Commonwealth Games so winning gold for England meant even more to me knowing I was not competing at my best.

"Choosing to have the operation now was not an easy decision. I am gutted not to be taking part in the World Championships, as I know everyone was behind me, but having the operation now will mean I have longer to recover and will be able to return fitter and stronger."