Kirkland underwent ACL surgery Wednesday and will miss the rest of the 2024-25 campaign.
Kirkland (lower body) was put on injured reserve Monday.
Kirkland (lower body) won't play Saturday in Pittsburgh, Derek Wills of Sportsnet 960 The Fan reports.
Kirkland suffered a lower-body injury during Friday's tilt against Columbus and won't return to the game, per Wes Gilbertson of the Calgary Sun.
Kirkland provided an assist in Saturday's 4-3 shootout win over the Wild.
Kirkland logged an assist and two hits in Thursday's 4-3 overtime loss to the Bruins.
Kirkland was recalled from AHL Calgary on Friday.
Kirkland was placed on waivers Sunday, per Elliotte Friedman of Sportsnet.
Kirkland signed a one-year, two-way contract with the Flames on Wednesday.
Kirkland was reassigned to AHL Tucson on Sunday.