According to German press agency SID the break was discovered by doctors at the Berlin-Marzahn Hospital following Voigt's return to Germany a week after his crash on the decent of the Col du Petit Saint Bernard during the Tour de France's stage 16 to Bourg Saint Maurice.
Voigt had earlier been treated for a broken cheekbone and concussion in Switzerland immediately after the accident on July 21. He is also suffering deep lacerations to his hands.
Despite his injuries the German cycling federation (BDR) named the 37-year-old in their preliminary selection for the World championships to be held in Mendrisio, Switzerland in September.
"Jens is almost a traditional selection for the team," said Udo Sprenger, vice-president of the BDR. "He has been informed of his pre-selection, but has not yet responded. This is no problem, he should first aim to return to riding."
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