“After much consideration, lots of time in rehabilitation clinics and after a conversation with both my doctor and physiotherapist, I have decided to end my career,” the 34-year-old said in a statement.
Having made 82 appearances for Germany, the centre-back’s single international goal came in the 4-0 rout of Argentina in the 2010 World Cup.
Photos: Katrina Kaif, Shamita Shetty at Mumbai airport
Photos: Varun Dhawan, Alia Bhatt promote 'Badri...' on 'Dil Hai Hindustani'
In pictures: 15 facts about kissing that will surprise you
Photos: Shahid Kapoor and Mira Rajput at cafe in Bandra
Photos: Deepika Padukone, Neha Dhupia and Soha Ali Khan at event