The Ravens' leading pass rusher with 9.5 sacks, Dumervil was sidelined for one game against the Minnesota Vikings due to a sprained left ankle suffered against the Pittsburgh Steelers on Thanksgiving.
Dumervil hadn't missed a game this season until the Ravens' 29-26 win over the Vikings, ending a streak of 144 consecutive games for the linebacker.
With Dumervil active, the Ravens scratched rookie outside linebacker John Simon, who was active against Minnesota.
This marks the third game in a row that Trawick has been out since spraining his ankle.
The Lions scratched cornerbacks Chris Houston (toe) and Darius Slay (knee surgery), quarterback Kellen Moore, running back Mikel Leshoure, offensive guards Rodney Austin and Leroy Harris and offensive tackle Jason Fox.
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