The 31-year-old former Scotland international returns to Rangers, his first club, almost 12 years after leaving Loftus Road to join Nottingham Forest.
Over and out: Nigel Quashie has left West Ham
'It's great to be back home, and I am delighted to be at a club that I love to pieces,' said Quashie, who has signed until the end of the season. 'I had a good time when I was here before, and the fans were very good to me. I'm a fan of the club myself so I know what they demand.
'There are some excellent players here and it is nice to come back and be a part of it. We've got a chance to get into the play-offs, and if we can do that and then get into the Premier League, the whole place will just take off.'
Hammers midfielder Quashie extends loan spell at BirminghamJANUARY TRANSFER WINDOW 2010: All moves at every Premier League clubWEST HAM UNITED FC