Spain international Martinez suffered the devastating injury in the German Super Cup defeat to Borussia Dortmund on Wednesday.
Martinez’s knee connected with the elbow of Dortmund left-back Marcel Schmelzer in the penalty area and he had to be taken off on a stretcher.
Bayern have now confirmed the severity of the problem, with reports putting Martinez’s recovery time at anything up to seven months.
Martinez, comfortable both in central midfield and at centre-back, will undergo an operation with famed knee specialist Dr Richard Steadman in the United States.
“Of course I am naturally very sad, “said Martinez. “But you don’t need to worry – I’ll come back even stronger.”
- Sports & Recreation
- Borussia Dortmund
- Marcel Schmelzer