Bury have lost Allan Smart for the rest of the season.
The veteran striker has been forced to have surgery on knee cartilage problem.
This is Smart's second knee operation this term, although it is not the same knee that gave him the problem earlier in the campaign.
"The problem was identified and it is tough on Allan," said Bury boss Chris Casper.
"He's had a horrible season with injuries, but you've just got to get on with it, with Allan out it will give other people a chance to claim a shirt."