The Titans announced the moves Thursday.
The 6-foot-4, 307-pound Aaitui has played in four career games since entering the NFL as an undrafted free agent with the Miami Dolphins in 2011, and he also has been with the New York Jets, New Orleans and Washington. The native of American Samoa played in 44 games in college at UNLV.
The Titans also placed nose tackle Sammie Hill on the physically unable to perform list. Coach Ken Whisenhunt says Hill needs some time to work his way back into shape after a knee injury this offseason. Dickerson hurt his Achilles during June workouts.
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