Drew Petrie's wretched run of injuries in 2010 has continued, with the North Melbourne vice-captain suffering his second broken foot.

Having recovered from a broken left foot, the 27-year-old Petrie returned to AFL action in Sunday's clash with Fremantle.

But he reported soreness in the right foot after the 61-point loss, with scans showing a fracture of the fifth metatarsal which is likely to sideline him for another six weeks.

"It felt a bit odd when I was warming down after the final siren and the alarm bells started ringing when I realised how similar the pain was to when I injured my left foot eleven or so weeks ago," Petrie told kangaroos.com.au.

"I spoke to our medical staff and I had a CT scan which showed there was a tiny fracture in the fifth metatarsal so almost the same injury but on the opposite side.

"It's got nothing to do with the old injury and one injury hasn't caused the other.

"It's simply a case of bad luck and I really can't believe it."

Petrie will undergo surgery on Tuesday night to have a rod inserted into his right foot.

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