ORCHARD PARK, N.Y. -- Backup defensive tackle Torell Troup became the latest Buffalo Bill to land on season-ending injured reserve.
Troup was placed on the list Wednesday as a result of a back problem that has nagged the second-year pro since training camp.
Troup, a 2010 second-round draft pick out of Central Florida, has missed five games this season, including a 28-24 loss at the New York Jets last weekend after his back locked up one day earlier.
The Bills also signed linebacker Robert Eddins to their practice squad.
The Associated Press contributed to this report.