Crows ruckman Jacobs has knee surgery

Veteran Adelaide ruckman Sam Jacobs has undergone knee surgery.
Veteran Adelaide ruckman Sam Jacobs has undergone knee surgery.

Veteran Adelaide ruckman Sam Jacobs has undergone knee surgery and will miss the next six weeks of the AFL season.

The 31-year-old hasn't played since hurting his right knee against Sydney in round two.

Jacobs had surgery on Wednesday to fix a meniscal problem and faces a four to six week rehabilitation program, the Crows say.

"We expect Sam to progress quickly through the next four-six weeks of rehab and be back to his best," Adelaide's medico Steve Saunders said in a statement.

The Crows will be forced to rely on novice Reilly O'Brien to lead their rucks in the absence of 198-gamer Jacobs, who has been a mainstay in Adelaide's line-up since crossing from Carlton at the end of 2010.

Australian Associated Press