NFL Network's Jason La Canfora is reporting that the Detroit Lions have signed safety Vincent Fuller. This move indicates that the Lions need help at safety this week with injuries piling up at the position.

Both Erik Coleman and Amari Spievey are dealing with injuries for the Lions. Coleman is expected to be out for a "bit," according to Lions head coach Jim Schwartz. Spievey is considered day-to-day, but right now it's not clear if he will play on Monday night against the Chicago Bears.

Because John Wendling, who typically only plays special teams, was forced into action at safety on Sunday against the Cowboys, this move is probably about having an insurance policy more than anything. Fuller played for the Tennessee Titans from 2005-10, so he has experience in this type of defense. The learning curve shouldn't be very steep, meaning he should be able to be active as soon as Monday if necessary.

It's not clear what move was made by the Lions to create room for Fuller. At first I was thinking Coleman could go on IR, but Schwartz didn't make it sound like his injury was of the season-ending variety, so it will be interesting to see what they did.