Khedira was named as a substitute for Real Madrid in their past two Liga games against Valencia and Valladolid and has only two remaining league fixtures and the Champions League final in which to prove his fitness for the finals in Brazil.
Along with 19-year-old Goretzka and 18-year-old Meyer, who had a spectacular debut season in the Bundesliga, coach Joachim Loew also drafted in Borussia Dortmund's Erik Durm, little-known Shkodran Mustafi of Sampdoria and Matthias Ginter of Freiburg.
Loew did a similar thing before the 2010 edition in South Africa when he announced Germany's youngest World Cup squad in 76 years and they went on to finish third in the tournament.
Loew called up Hoffenheim forward Kevin Volland along with veteran striker Miroslav Klose - who is one short of Ronaldo's record of 15 World Cup finals goals - but long-serving centre-forward Mario Gomez was not included.
Germany have been drawn in Group G for next month's World Cup in Brazil along with Ghana, Portugal and United States.
- Sports & Recreation
- Joachim Loew
- Leon Goretzka
- Mesut Ozil
- Real Madrid
- Lukas Podolski