The Dolphins placed ILB Karlos Dansby on injured reserve Friday and ruled TE Anthony Fasano and OT Lydon Murtha out for their season finale against the Patriots.
They signed WR Julius Pruitt off their practice squad to fill Dansby's roster spot.
Dansby missed last week's game against the Lions with a toe injury. He finished his first season in Miami with 95 tackles and three sacks. ILB Tim Dobbins will start for Dansby.