Elia Viviani shares the extent of his Paris-Roubaix injuries on Twitter

Elia Viviani takes to Twitter after being hit by a motorbike on the Arenberg cobbled sector at Paris-Roubaix

Elia Viviani escaped with a chest injury and cuts to his hip after being struck from behind on the Trouée d’Arenberg cobbled sector in Paris-Roubaix.

The Team Sky rider was slowing down after the road was blocked due to a huge crash by Orica-GreenEdge’s Mitch Docker when he was hit by the motorbike, who had approached the sector at speed.

>> Subscribe to Cycling Weekly this Autumn and save 35%. Enjoy the luxury of home delivery and never miss an issue <<

Viviani was forced into the barriers at the side of the cobbles as fans took evasive action. A spectator managed to catch the clip on camera and uploaded it to Twitter.

Also on the social network, Viviani updated his well-wishers with pictures of the crash and his bandaged-up injuries.

“Today I was unlucky but at the same time the most lucky of the world! A big Chest trauma and two cut (chest and hip),” Viviani wrote on Twitter.

Sky’s sports director Servais Knaven said: “If you go in the Arenberg there should not be any motorbikes near the riders. He was in the second group with [Peter] Sagan and [Fabian] Cancellara – at the moment [Viviani] is in hospital. He looks all right, nothing serious we think but you never know.”