DANGEROUS Western Bulldogs forward Daniel Giansiracusa had an arthroscope on his knee on Monday and will miss the next six weeks of football.

Giansiracusa injured his knee against North Melbourne on Sunday, being helped from the ground 11 minutes into the first quarter, but he was able to return to kick two crucial goals in the final quarter.

The Bulldogs said the arthroscope was just to clean up some loose material in the knee and would expect Giansiracusa to make a full recovery.

After Sunday’s match Giansiracusa said his knee “locked and wouldn’t go back to normal.”

“The docs worked some magic underneath and it came good, so it was good I was able to contribute in the end because it didn't look like I was going to do much at the start of the day."

The 27-year-old forward suffered an ACL scare in the same leg in late 2007 but after the match Giansiracusa said that he believed it was unrelated.