London: Premier League strugglers Queens Park Rangers said Tuesday that their Brazilian midfielder Sandro would be out of action until at least the new year.
The 25-year-old was injured in the 1-0 loss away to Newcastle on Saturday and was substituted after 61 minutes.
"Sandro took a bad knock to his right knee, and has suffered damage to his medial ligaments," club doctor Peter Florida said on the club`s website.
QPR added the injury was not related to a previous anterior cruciate ligament problem.
Sandro joined QPR on transfer deadline day from London top-flight rivals Tottenham Hotspur in a move that reunited him with former Spurs boss Harry Redknapp.
He has made eight Premier League appearances since his arrival at Loftus Road.
QPR are currently bottom of the table, three points adrift of safety.