Foster missed practice this week with the injury and was listed as questionable on Friday before the Texans announced that he was out on Saturday.
Foster, who is second in the NFL with 822 yards rushing, was injured Nov. 2 against the Eagles before Houston's bye week. This will be the second game he's missed this season after sitting out in Week 3 with a hamstring injury.
Blue, a sixth-round draft pick, has appeared in each game this season and has 234 yards rushing.
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