Adelaide fears acrobatic forward Brett Burton's hamstring injury will keep him out of the remaining four matches before the finals.

And veteran defender Ben Hart also has a hamstring injury and is expected to miss at least the next two games.

Hart went off early in the second quarter of the match against Collingwood at AAMI Stadium on Saturday night and Burton hobbled across the boundary line to the bench late in the final term.

More will be known soon on the extent of the hamstring damage.

Adelaide officials said on Saturday night Burton's injury was more severe than Hart's, and the early forecasts were they could miss two and four matches respectively.

Adelaide's next four matches are against Fremantle at AAMI Stadium next Sunday, the Western Bulldogs at the MCG the following Saturday night and then Port Adelaide and Melbourne at AAMI Stadium.

Experienced Scott Welsh and Nathan Bock or Jason Torney are the likely replacements for Burton and Hart in the Crows' 22 to play the Dockers.