Swans ruckman Kurt Tippett has undergone a procedure after further investigation of the injury he suffered in Round 12.

Tippett injured his semitendinosus tendon during the match against the Giants and the initial recommendation was six weeks on the sidelines with carefully managed rehabilitation.

However, General Manager of Football Tom Harley says after further research and consultation, Tippett met with a surgeon in Melbourne.

“We wanted to ensure the best possible outcome for Kurt, so our medical team conducted extensive consultation and research on the best way to heal this type of injury,” Harley said.

“The decision to operate was made yesterday and Kurt underwent surgery in Melbourne last night to have a procedure on his tendon.

“The surgery was a success and we’re hopeful Kurt will be ready to return in eight weeks."

Fellow ruckmen Toby Nankervis and Sam Naismith have been named in an extended 25-man squad for Sunday’s match against Melbourne.