The 29-year-old was flown from the team's base near Porto Seguro to a clinic in Eunapolis on Saturday with the helicopter option preferred to a trip across the Bahia region's uneven roads.

A local Brazilian website -- Radar64 -- claimed Schweinsteiger was flown to hospital after taking a knock to his left foot in training on Friday.

But the German Football Assocation (DFB) insist the hospital visit was for a routine MRI scan, requested by FIFA, because of his recent knee injury.

Schweinsteiger took a full part in Sunday's final training session at Arena Forte Nova.

"It is not a new injury. The examination was part of a measure under the so-called FIFA protection program concerning technical aspects of an injury," DFB spokesman Jens Grittner told SID, a subsidiary of AFP.

Schweinsteiger later rejoined the team in Salvador to prepare for Monday's Group G match.

"FIFA demanded another medical check for insurance reasons, his knee is fine" said Germany coach Joachim Loew.

The Bayern Munich midfielder has struggled with tendinitis of the knee since the German Cup final a month ago.

Both Germany captain Philipp Lahm, who had damaged ankle ligaments, and goalkeeper Manuel Neuer, who injured his right shoulder, had similar examinations by team doctor Hans-Wilhelm Mueller-Wohlfahrt before the squad left Germany.

The results were then passed onto FIFA, added Grittner.

"It just a scan and they just wanted to get some insight into how fit he (Schweinsteiger) is, it's just a normal procedure," said goalkeeper Neuer.

Schweinsteiger has been able to take full part in training in Brazil.

He last started a Bayern match on May 10, but came off the bench for a brief appearance in Germany's warm-up friendly win against Armenia before the squad flew to Brazil.