Sprint star Usain Bolt is in Munich, seeking treatment from famous doctor Hans-Wilhelm Mueller-Wohlfahrt in a bid to cure his problematic pelvis injury before August’s world athletic championships.

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The reigning world and Olympic 100m and 200m champion has withdrawn from both the Diamond League meets this Saturday in Paris and on July 9 in Lausanne as he struggles for fitness.

Bolt is suffering from a blocked sacroiliac joint in the pelvis which effects his left leg and the injury also forced him out of last week’s Jamaican championships.

His goal now is to be fit for the world championships in Beijing from August 22-30 as he starts work with Mueller-Wohlfahrt, the team doctor to football’s World Cup winners Germany, who has treated Bolt throughout his career.

“He’s the best doctor in the world and a great, great man,” Bolt has said of the 72-year-old German doctor, who has a string of famous patients.

“He has treated my muscles, but he is more than a doctor to me,” added Bolt, who set the 100m and 200m world records in 2009 in Berlin.

The Paris and Lausanne withdrawals are the latest setbacks for the 28-year-old who has not completed a full season since 2013, when he won three golds at the Moscow world championships, in the 100m, 200m and 4x100m relay.

So far this year he has run an exhibition 100m in Rio de Janeiro and three 200m races which have produced only average times.