The Western Bulldogs have suffered a significant injury blow, with Daniel Giansiracusa sidelined for up to six AFL matches.

Giansiracusa underwent arthroscopic surgery on Monday to repair damage to his right knee.

He suffered the damage during Sunday's win over North Melbourne, where the utility kicked two key last-term goals.

Giansiracusa was in career-best form, but had to leave the field early in Sunday's match.

He needed treatment before returning to the field.

It has been a big weekend for injuries, with Fremantle captain Matthew Pavlich undergoing scans on Monday afternoon for a calf muscle injury.

Pavlich is out of action for at least two matches.

Also, erratic Carlton full-forward Brendan Fevola could miss Sunday's match against the Dockers because of a finger operation.

The club has revealed Fevola needed minor surgery on Saturday for ligament damage in his left little finger.

Fevola had the operation the day after Essendon smashed the Blues by 69 points.

Carlton defender Paul Bower is also out of action for two to four weeks after suffering a knee injury in the Essendon loss.

Scans have revealed a medial ligament strain.

In better news for the Blues, fellow backman Bret Thornton is set to return from a hamstring injury.

Meanwhile, the injury woes continue at Hawthorn, with forward Mark Williams to miss six to eight weeks because of a knee injury.

Williams was forced from the field during Saturday night's loss to West Coast and scans have shown he also has a medial ligament strain.

Brendan Whitecross will need a test after hurting his knee against the Eagles.

Stuart Dew (quad) will miss one to two weeks after his training mishap last week, while ruckman Brent Renouf needs a test following his ankle injury while playing for Box Hill in the VFL.

In more heartening news for the embattled reigning premiers, Max Bailey is on the verge of resuming from the knee reconstruction he needed last year.

Stephen Gilham (illness) should resume in the seniors for Saturday's crucial game against the Bulldogs and Clinton Young (hip) should play for Box Hill within a fortnight.

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