Adrien Costa back on the bike less than three months after losing his leg

Adrien Costa back on the bike less than three months after losing his leg

The promising American rider was badly injured in a climbing accident earlier this year

Adrien Costa at the 2016 Tour of Britain (Tim De Waele/Corbis via Getty Images)

Hagens Berman Axeon rider Adrien Costa is back on the bike less than three months after his leg was amputated following a climbing accident.