Tottenham midfielder Sandro has surgery

Sandro could be out for lengthy period. Photo: PA

Tottenham midfielder Sandro has undergone surgery after suffering a knee injury in Saturday's match at QPR, his club have confirmed.

The 23-year-old Brazil international was substituted after 25 minutes at Loftus Road, having gone down clutching his right knee as he reached for the ball.

A statement on www.tottenhamhotspur.com read: "Sandro has undergone knee surgery following the injury that forced his substitution against QPR at the weekend.

"The midfielder's recovery schedule will be assessed over the next few days."