THE GOLD Coast injury crisis has deepened, with Jarrod Harbrow, Tom Nicholls and Trent McKenzie all ruled out for the remainder of the season.

Charlie Dixon will also miss Saturday's match against Essendon with an ankle injury.

Harbrow (knee, ankle and shoulder) will have a triple dose of surgery over the coming month after battling through recent matches.

Ruckman Nicholls has avoided damage to his PCL, but aggravated the capsule in his knee against Richmond on Sunday.

It's possible he could be available for the final round against the Sydney Swans, but the club won't take the risk.

McKenzie has damage to his hamstring tendon, and after missing the Tigers match at the weekend, needs another month to recover.

It adds to a shocking run for the club in 2015, with starting midfield Gary Ablett, Jaeger O'Meara, David Swallow and Dion Prestia playing just 20 matches between them.

In better news, Jack Martin has passed his initial concussion tests after clashing heads with Trent Cotchin, and should play against the Bombers.

Key defender Rory Thompson will return from an ankle injury.

Zac Smith, Danny Stanley, Henry Schade and Greg Broughton were all strong in the NEAFL at the weekend and being strongly considered to return to the seniors.