The TotalEnergies driver crashed into the fans at high speed as they lined up along a cobbled street during stage 5 between Lille and Arenberg.
Footage shows Oss being knocked off balance after clipping a fan before colliding with another who is leaning in to film the race with a phone.
“Further examinations have revealed a fracture of a cervical vertebra requiring immobilization for several weeks,” the team stated. to read.
“Daniel Oss is therefore forced to withdraw from the Tour de France… The whole team wishes you a speedy recovery Daniel.”
There were several crashes, though not all serious, during Wednesday’s Stage 5 as riders ran on cobblestones.
The Italian rider was somehow able to finish the stage despite the crash, which also involved two other riders being taken down behind him.
During last year’s race, a fan caused a major accident after standing in front of the racing pack with a cardboard sign, which appeared to display a message for the television cameras. The woman in question was later identified and arrested by the authorities.
Slovenia’s Tadej Pogacar is now the current leader of the Tour after winning the sixth stage.